# How SoldComps (0 Followers, 74.23x Growth), AltIndex ($677K) & Heron Copier ($504K) Monetize Data Pipes

- **Case ID**: BID-067 (AltIndex LLC & SoldComps vs. Heron Copier)
- **Category**: 96 Combined X Followers, $1.25M Revenue · How SoldComps (0 Followers, 74.23x Growth), AltIndex ($677K) & Heron Copier ($504K) Monetize Data Pipes
- **Published**: 2026-11-07
- **Author**: Jimmy (https://www.jimmydecodes.com/en/about/)
- **Canonical URL**: https://www.jimmydecodes.com/en/cases/altindex-soldcomps-vs-heron-copier/

## The Short Answer (Verdict)

> [Verified] How did three solo developers with a **combined 96 X followers (`63 + 0 + 33`)** build **`$1,254,106` in verified revenue** and **`$49,799 in combined MRR`** — including a 0-follower API that grew **`74.23x` in 6 months** and earns **`$26.56` per website visitor**? Let's audit the three primary-source Stripe, GSC, and Creem/Polar ledgers:
1. **SoldComps (`sold-comps.com`): `0` X Followers, `74.23x` Six-Month Growth, and `$26.56` Revenue Per Visitor**:
   - Founded Mar 28, 2025 in Canada with **`0` X followers** (synced Nov 7, 2026 via Stripe + Google Search Console).
   - **The Pain Point Mined**: Thousands of sports-card, sneaker, vintage-tech, and e-commerce repricing apps need historical eBay sold prices ('comps'), but eBay deprecated sold-item lookups in its public Finding API and tightly gates its enterprise Marketplace Insights API.
   - SoldComps stepped into that exact gap: a dead-simple REST API returning up to **200 real eBay sold items per request** (price, condition, sale date) at `Starter $9/mo`, `Growth $29/mo`, and `Scale $79/mo` [Self-Reported].
   - **Verified Ledger Performance**: Revenue rocketed **`74.23x`** in 6 months from **`$347` in Apr 2026** to **`$25,759` in Oct 2026** (`$25,993` last 30d, `$7,289` in the first 7 days of Nov 2026 alone!), hitting **$25,866 Current MRR (+24.1% MoM)** across **586 active subscriptions (`$44.14/mo` ARPU)**. Via GSC API verification, just **979 monthly organic search visitors** (`7,477` impressions) generated that `$25,993` — an extraordinary **`$26.56` in revenue per visitor**!
2. **AltIndex LLC (`altindex.com`): `63` X Followers, `$677,315` All-Time via Alternative Stock Signals + MCP**:
   - Founded Oct 1, 2023 in the US by **Quincy Miller (`@_quincyrm`, `63` X followers**, `70.0%` margin [Self-Reported], listed at `$800,000 / 5.7x`, synced Nov 7, 2026 via Stripe).
   - Runs automated daily scrapers tracking **~3,000 US equities** across Reddit mentions, TikTok buzz, job postings, app downloads, and Congress/insider trades, exposing both web dashboards (`$29–$99/mo`), developer APIs (`$19–$199/mo`), and **native Claude / ChatGPT / Cursor MCP connectors** — generating **$677,315 all-time**, **$213,758 LTM**, and **$16,461 Current MRR across 643 subscriptions** (`76%` on annual plans)!
3. **Heron Copier (`heroncopier.com`): `33` X Followers, `$504,247` All-Time Syncing Trades Across 6 Platforms**:
   - Founded Jun 1, 2023 in Indonesia by **Agaz (`@agazdev`, `33` X followers**, `80.0%` margin [Self-Reported], synced Nov 7, 2026 via Creem + Polar): cloud and local trade copier across MetaTrader, cTrader, DXtrade, and 3 other platforms (`$19/mo` or `$179/yr`), banking **$504,247 all-time**, **$194,918 LTM**, and **$7,472 MRR across 396 subscriptions**!
Our solo B2B playbook: **Never worry about having 0 followers on X. Find a deprecated or gated official API where businesses desperately need historical sold comps or alternative signals, wrap a clean caching proxy + native Claude/Cursor MCP Server around it at $29–$79/mo, and capture $26+ per search visitor!**

Think you need a massive social audience to build a high-margin SaaS? Meet three 'Data & Trading Plumbing' startups whose founders have a combined 96 X followers (63 + 0 + 33), yet have generated $1,254,106 in verified revenue and $49,799 in combined MRR across 1,625 active subscriptions: 1) 0-follower Canadian startup SoldComps (sold-comps.com, founded Mar 28, 2025) solved a painful developer bottleneck — eBay's official Finding API restricting historical sold-item price lookups — by delivering up to 200 real eBay sold listings per API call ($9–$79/mo). Monthly revenue exploded 74.23x in 6 months from $347 (Apr 2026) to $25,759 (Oct 2026), hitting $25,866 MRR (+24.1% MoM) across 586 subscriptions and generating $25,993 in 30d revenue from just 979 Google Search visitors ($26.56 revenue per visitor!); 2) 63-follower US founder Quincy Miller's AltIndex LLC (altindex.com) aggregates daily alternative stock data (Reddit, TikTok, job postings, Congress trades) across ~3,000 tickers with native Claude/ChatGPT/Cursor MCP connectors, banking $677,315 all-time and $16,461 MRR across 643 subscriptions (76% annual plans); 3) 33-follower Indonesian developer Agaz's Heron Copier (heroncopier.com) syncs trades across 6 platforms (MetaTrader, cTrader, DXtrade) with zero VPS required, earning $504,247 all-time at an 80.0% margin!

## Key Numbers (Evidence-Graded)

| Metric | Figure | Evidence Level | Source & Basis |
| --- | --- | --- | --- |
| SoldComps (sold-comps.com) 0-Follower eBay API Ledger | All-Time $72,544 | Apr 2026 $347 -> Oct 2026 $25,759 (74.23x) | MRR $25,866 (+24.1%) | Verified | [Verified] TrustMRR Stripe + GSC sync (2026-11-07, 586 subs, $44.14/mo ARPU) · 979 monthly organic search visitors generated $25,993 in 30d revenue ($26.56 revenue/visitor!) |
| AltIndex LLC (altindex.com) 63-Follower Alt-Data Ledger | All-Time $677,315 | LTM $213,758 | MRR $16,461 (643 subs, 76% annual, 70% margin) | Verified | [Verified] TrustMRR Stripe sync (2026-11-07, US entity, listed at $800,000 / 5.7x) · Tracks daily alternative signals across ~3,000 stocks with native Claude/ChatGPT/Cursor MCP servers |
| Heron Copier (heroncopier.com) 33-Follower Trade Sync | All-Time $504,247 | LTM $194,918 | MRR $7,472 (396 active subs, 80% margin) | Verified | [Verified] TrustMRR Creem + Polar sync (2026-11-07, Indonesia founder @agazdev) · Zero-VPS trade replication across 6 trading platforms ($19/mo or $179/yr) |
| Combined 'Sub-100-Follower Plumbing Triad' Totals | 96 Combined X Followers | $1,254,106 Combined Revenue | 1,625 Active Subs | $49,799 MRR | Verified | [Verified + Derived] Cross-ledger aggregation across all three verified startups · Proves developer data pipes and cross-platform bridges convert via high-intent search without social clout |
| Solo B2B 'Deprecated-API Proxy + MCP Server' Model | $29–$79/mo Developer Tiers | Edge Cache + Scraper Pool COGS <= $58/mo | ~90% Margin | Our estimate | [Model Estimate] Scrape once into TimescaleDB/Postgres -> serve 1,000x via REST & MCP · High cache-hit ratios turn scraped historical price/signal series into a compounding software asset |

## 1. Primary-Source Stripe Ledger Audit: AltIndex LLC & SoldComps vs. Heron Copier

Think you need a massive social audience to build a high-margin SaaS? Meet three 'Data & Trading Plumbing' startups whose founders have a combined 96 X followers (63 + 0 + 33), yet have generated $1,254,106 in verified revenue and $49,799 in combined MRR across 1,625 active subscriptions: 1) 0-follower Canadian startup SoldComps (sold-comps.com, founded Mar 28, 2025) solved a painful developer bottleneck — eBay's official Finding API restricting historical sold-item price lookups — by delivering up to 200 real eBay sold listings per API call ($9–$79/mo). Monthly revenue exploded 74.23x in 6 months from $347 (Apr 2026) to $25,759 (Oct 2026), hitting $25,866 MRR (+24.1% MoM) across 586 subscriptions and generating $25,993 in 30d revenue from just 979 Google Search visitors ($26.56 revenue per visitor!); 2) 63-follower US founder Quincy Miller's AltIndex LLC (altindex.com) aggregates daily alternative stock data (Reddit, TikTok, job postings, Congress trades) across ~3,000 tickers with native Claude/ChatGPT/Cursor MCP connectors, banking $677,315 all-time and $16,461 MRR across 643 subscriptions (76% annual plans); 3) 33-follower Indonesian developer Agaz's Heron Copier (heroncopier.com) syncs trades across 6 platforms (MetaTrader, cTrader, DXtrade) with zero VPS required, earning $504,247 all-time at an 80.0% margin!

[Verified] How did three solo developers with a **combined 96 X followers (`63 + 0 + 33`)** build **`$1,254,106` in verified revenue** and **`$49,799 in combined MRR`** — including a 0-follower API that grew **`74.23x` in 6 months** and earns **`$26.56` per website visitor**? Let's audit the three primary-source Stripe, GSC, and Creem/Polar ledgers:
1. **SoldComps (`sold-comps.com`): `0` X Followers, `74.23x` Six-Month Growth, and `$26.56` Revenue Per Visitor**:
   - Founded Mar 28, 2025 in Canada with **`0` X followers** (synced Nov 7, 2026 via Stripe + Google Search Console).
   - **The Pain Point Mined**: Thousands of sports-card, sneaker, vintage-tech, and e-commerce repricing apps need historical eBay sold prices ('comps'), but eBay deprecated sold-item lookups in its public Finding API and tightly gates its enterprise Marketplace Insights API.
   - SoldComps stepped into that exact gap: a dead-simple REST API returning up to **200 real eBay sold items per request** (price, condition, sale date) at `Starter $9/mo`, `Growth $29/mo`, and `Scale $79/mo` [Self-Reported].
   - **Verified Ledger Performance**: Revenue rocketed **`74.23x`** in 6 months from **`$347` in Apr 2026** to **`$25,759` in Oct 2026** (`$25,993` last 30d, `$7,289` in the first 7 days of Nov 2026 alone!), hitting **$25,866 Current MRR (+24.1% MoM)** across **586 active subscriptions (`$44.14/mo` ARPU)**. Via GSC API verification, just **979 monthly organic search visitors** (`7,477` impressions) generated that `$25,993` — an extraordinary **`$26.56` in revenue per visitor**!
2. **AltIndex LLC (`altindex.com`): `63` X Followers, `$677,315` All-Time via Alternative Stock Signals + MCP**:
   - Founded Oct 1, 2023 in the US by **Quincy Miller (`@_quincyrm`, `63` X followers**, `70.0%` margin [Self-Reported], listed at `$800,000 / 5.7x`, synced Nov 7, 2026 via Stripe).
   - Runs automated daily scrapers tracking **~3,000 US equities** across Reddit mentions, TikTok buzz, job postings, app downloads, and Congress/insider trades, exposing both web dashboards (`$29–$99/mo`), developer APIs (`$19–$199/mo`), and **native Claude / ChatGPT / Cursor MCP connectors** — generating **$677,315 all-time**, **$213,758 LTM**, and **$16,461 Current MRR across 643 subscriptions** (`76%` on annual plans)!
3. **Heron Copier (`heroncopier.com`): `33` X Followers, `$504,247` All-Time Syncing Trades Across 6 Platforms**:
   - Founded Jun 1, 2023 in Indonesia by **Agaz (`@agazdev`, `33` X followers**, `80.0%` margin [Self-Reported], synced Nov 7, 2026 via Creem + Polar): cloud and local trade copier across MetaTrader, cTrader, DXtrade, and 3 other platforms (`$19/mo` or `$179/yr`), banking **$504,247 all-time**, **$194,918 LTM**, and **$7,472 MRR across 396 subscriptions**!
Our solo B2B playbook: **Never worry about having 0 followers on X. Find a deprecated or gated official API where businesses desperately need historical sold comps or alternative signals, wrap a clean caching proxy + native Claude/Cursor MCP Server around it at $29–$79/mo, and capture $26+ per search visitor!**

## 2. Solo B2B Productized Architecture: Restricted-API Data Middleware ('Sold Comps & Alternative Signal API' + Native Claude/Cursor MCP Server) Subscription

[Layer 1: 'Deprecated Official API' Ingestion Cluster] Stack: Python `curl_cffi` (TLS fingerprint spoofing) + rotating residential proxies — Continuously ingests public web data that official APIs gated or deprecated (historical sold comps, company job-posting velocity, insider filings, marketplace rankings) (Cost: ~$22/mo proxies/workers)

[Layer 2: Historical Time-Series Store & 95%-Hit Edge Cache] Stack: PostgreSQL / TimescaleDB + Cloudflare KV Edge Cache — The 90%-margin secret: scrape a SKU or ticker once, normalize it into Postgres, and serve subsequent API lookups for the next 24 hours from edge cache at $0 marginal cost (Cost: $15/mo database)

[Layer 3: Triple-Surface Delivery (REST API + Sheets Add-On + Native MCP Server)] Stack: FastAPI + `@modelcontextprotocol/sdk` (Claude / Cursor / ChatGPT MCP) — Monetizes three buyer personas from one database: 1) devs via REST JSON (SoldComps model), 2) analysts via `=GET_COMP()` in Google Sheets, and 3) AI power users via native MCP connectors (AltIndex model) (Cost: $5/mo Workers)

[Layer 4: API Key Issuance, Quota Metering & Stripe Tier Gate] Stack: Unkey.dev / Upstash Redis + Stripe Billing (`$9 / $29 / $79/mo`) — Gives developers a 100-call free sandbox API key that works in 60 seconds; once wired into their production codebase, usage automatically upgrades them into `$29–$79/mo` tiers (Cost: $0/mo free tier)

[Layer 5: 'Deprecated Endpoint Error' Developer SEO Matrix] Stack: Astro Docs Site + Open-Source GitHub SDKs (`pip install` / `npm i`) — Ranks #1 for exact developer pain queries ('eBay findCompletedItems alternative API'), replicating SoldComps' $26.56 revenue per organic search visitor (Cost: $0/mo)

## 3. Step-by-Step Zero-Code Execution & Risk Mitigation

Step 1: Mine GitHub Issues & Developer Forums for 'Deprecated / Gated Official APIs': How did 0-follower SoldComps grow 74.23x in 6 months to $25,866 MRR and earn $26.56 per website visitor from just 979 monthly Google visitors? Because every single visitor was a developer or reseller business searching for a drop-in replacement after eBay restricted historical sold-item lookups in its Finding API! Create a database named `Deprecated_API_Goldmine` with 7 exact columns: `Platform_Name`, `Deprecated_Endpoint` (e.g., `findCompletedItems`), `Data_Payload_Needed` (sold prices, condition, job-posting velocity, insider trades), `Public_Web_Accessible` (`YES`/`NO`), `Cache_TTL_Hours`, `Monthly_Price_Ladder` (`$9 / $29 / $79`), and `Exact_Error_Search_Query`. (Guardrail: Target the golden intersection: **data that is publicly visible on the web without logging in, gated or deprecated in the official API, and directly tied to pricing or trading decisions!**)

Step 2: Architect a 'Scrape-Once, Serve-1000x' Edge-Cached Time-Series DB: Never scrape the target site synchronously on every user API call! Follow AltIndex (~3,000 tickers updated daily on a schedule) and SoldComps: run background workers (`curl_cffi` + residential proxies) to pre-index high-volume SKUs and cache every on-demand query in PostgreSQL + Cloudflare KV for 12–24 hours. When 500 developers query comps for the same SKU or ticker, 499 of them are served from your edge cache in <30ms at $0 marginal cost! (Guardrail: Enrich the raw response with 3 pre-computed metrics that official APIs never provide: **`outlier_trimmed_median_price`**, **`30d_price_momentum_pct`**, and **`days_to_sell_velocity`**.)

Step 3: Copy-Paste the 'Sold-Comp Anomaly Filter & MCP Server' System Prompt: Raw marketplace sold listings are polluted with 'box only', 'broken/for parts', and accessory listings that ruin automated repricers. Run this exact prompt on ambiguous listings and expose the clean output via both REST and a native **Claude / Cursor MCP Server** (just like AltIndex):
```text
You are a Principal Pricing & Alternative Data Engineer. Target Canonical SKU: [Insert SKU Name & Spec]. Raw Scraped Sold Listings (up to 200 items): [Inject Raw_Sold_Items JSON].
Output ONLY a valid, sanitized JSON response matching this exact schema:
1. `clean_sold_comps`: Filter out all 'box only', 'for parts/broken', 'manual/cable only', and multi-item lot listings.
2. `condition_stats`: Compute exact median sold price, interquartile range (IQR), and sample count segmented by `New`, `Used_Good`, and `Refurbished`.
3. `arbitrage_alert`: Compare current lowest active listing against the 30-day clean sold median; flag `PROFITABLE_FLIP: true` if net spread after marketplace fees >= 22%.
4. `mcp_agent_digest`: A 50-word structured summary optimized for Claude / Cursor / ChatGPT MCP tool calls.
```
Publish a 1-command MCP package (`npx @yourbrand/comps-mcp-server`) so AI-native analysts and coding agents can query your data pipe directly inside Claude and Cursor. (Guardrail: Use deterministic regex rules to strip 90% of obvious junk listings ('box only', 'parts') for $0, invoking the LLM only on edge-case titles.)

Step 4: Replicate SoldComps' $26.56/Visitor Conversion Funnel ($9 / $29 / $79/mo): Once a developer wires your REST endpoint into their sports-card scanner, e-commerce repricer, or trading bot, **churn drops near zero because turning off your API breaks their app** (explaining SoldComps' 586 active subs and AltIndex's 76% annual-plan mix)! Put an interactive, zero-signup **Live JSON Playground** right in the hero section of your homepage: let visitors type any SKU/ticker, see 200 clean sold comps in 1 second, and click **'Grab Your Free 100-Call API Key'**. (Guardrail: Rank #1 for exact deprecation error strings on Google and publish drop-in migration guides on GitHub showing how to swap the dead official endpoint for your URL by changing just 2 lines of code!)

Risk Guardrail · Failing to Enforce Rate Limits & Cache TTLs on $9/mo Entry Tiers: Without strict per-second rate limiting and 12-hour cache TTLs, a single developer with an infinite `while(true)` loop on a $9/mo plan can burn through $500 of proxy bandwidth overnight. Enforce hard quota caps via Unkey/Upstash and serve repeat queries from Postgres cache.

Risk Guardrail · Shipping Only a Raw REST Endpoint and Ignoring MCP & Spreadsheets: AltIndex reached $677,315 all-time and 76% annual retention by serving both human dashboards, REST APIs, and **Claude/ChatGPT/Cursor MCP connectors**. Always ship a 1-click Google Sheets formula (`=GET_SOLD_MEDIAN()`) and an MCP Server alongside your REST API.

Risk Guardrail · Scraping Private or PII Data Instead of Public Market Pricing & Filings: Follow SoldComps and AltIndex strictly: ingest only publicly visible, non-PII market telemetry (item sold prices, public job counts, statutory SEC/Congress filings). Never scrape personal user profiles or behind-login private data.

## Three questions to ask about businesses like this

1. What are the verified Stripe metrics and unit economics for AltIndex LLC & SoldComps vs. Heron Copier? — All-Time $72,544 | Apr 2026 $347 -> Oct 2026 $25,759 (74.23x) | MRR $25,866 (+24.1%); All-Time $677,315 | LTM $213,758 | MRR $16,461 (643 subs, 76% annual, 70% margin).
2. What is the #1 operational risk or valuation trap to avoid? — Failing to Enforce Rate Limits & Cache TTLs on $9/mo Entry Tiers: Without strict per-second rate limiting and 12-hour cache TTLs, a single developer with an infinite `while(true)` loop on a $9/mo plan can burn through $500 of proxy bandwidth overnight. Enforce hard quota caps via Unkey/Upstash and serve repeat queries from Postgres cache.
3. How can a solo operator launch a 'Restricted-API Data Middleware ('Sold Comps & Alternative Signal API' + Native Claude/Cursor MCP Server) Subscription' on a $42–$70/mo lean stack? — Highly Worth It (96 combined X followers across SoldComps, AltIndex & Heron Copier banking $1.25M proves data pipes need zero social clout); Ceiling: $25,000–$65,000/mo (500–1,200 sticky developer & analyst subscriptions at $29–$79/mo); MVP Time: 48 hours to wrap a cached PostgreSQL comp database in FastAPI + Unkey + a Claude MCP Server.

## FAQ

### Q: Failing to Enforce Rate Limits & Cache TTLs on $9/mo Entry Tiers
A: Without strict per-second rate limiting and 12-hour cache TTLs, a single developer with an infinite `while(true)` loop on a $9/mo plan can burn through $500 of proxy bandwidth overnight. Enforce hard quota caps via Unkey/Upstash and serve repeat queries from Postgres cache.

### Q: Shipping Only a Raw REST Endpoint and Ignoring MCP & Spreadsheets
A: AltIndex reached $677,315 all-time and 76% annual retention by serving both human dashboards, REST APIs, and **Claude/ChatGPT/Cursor MCP connectors**. Always ship a 1-click Google Sheets formula (`=GET_SOLD_MEDIAN()`) and an MCP Server alongside your REST API.

### Q: Scraping Private or PII Data Instead of Public Market Pricing & Filings
A: Follow SoldComps and AltIndex strictly: ingest only publicly visible, non-PII market telemetry (item sold prices, public job counts, statutory SEC/Congress filings). Never scrape personal user profiles or behind-login private data.

## Sources

1. SoldComps (sold-comps.com) 0-Follower eBay API Ledger: All-Time $72,544 | Apr 2026 $347 -> Oct 2026 $25,759 (74.23x) | MRR $25,866 (+24.1%) ([Verified] TrustMRR Stripe + GSC sync (2026-11-07, 586 subs, $44.14/mo ARPU) · 979 monthly organic search visitors generated $25,993 in 30d revenue ($26.56 revenue/visitor!)): https://www.jimmydecodes.com/cases/altindex-soldcomps-vs-heron-copier/
2. AltIndex LLC (altindex.com) 63-Follower Alt-Data Ledger: All-Time $677,315 | LTM $213,758 | MRR $16,461 (643 subs, 76% annual, 70% margin) ([Verified] TrustMRR Stripe sync (2026-11-07, US entity, listed at $800,000 / 5.7x) · Tracks daily alternative signals across ~3,000 stocks with native Claude/ChatGPT/Cursor MCP servers): https://www.jimmydecodes.com/cases/altindex-soldcomps-vs-heron-copier/
3. Heron Copier (heroncopier.com) 33-Follower Trade Sync: All-Time $504,247 | LTM $194,918 | MRR $7,472 (396 active subs, 80% margin) ([Verified] TrustMRR Creem + Polar sync (2026-11-07, Indonesia founder @agazdev) · Zero-VPS trade replication across 6 trading platforms ($19/mo or $179/yr)): https://www.jimmydecodes.com/cases/altindex-soldcomps-vs-heron-copier/
4. Combined 'Sub-100-Follower Plumbing Triad' Totals: 96 Combined X Followers | $1,254,106 Combined Revenue | 1,625 Active Subs | $49,799 MRR ([Verified + Derived] Cross-ledger aggregation across all three verified startups · Proves developer data pipes and cross-platform bridges convert via high-intent search without social clout): https://www.jimmydecodes.com/cases/altindex-soldcomps-vs-heron-copier/
5. Solo B2B 'Deprecated-API Proxy + MCP Server' Model: $29–$79/mo Developer Tiers | Edge Cache + Scraper Pool COGS <= $58/mo | ~90% Margin ([Model Estimate] Scrape once into TimescaleDB/Postgres -> serve 1,000x via REST & MCP · High cache-hit ratios turn scraped historical price/signal series into a compounding software asset): https://www.jimmydecodes.com/cases/altindex-soldcomps-vs-heron-copier/

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*Citation note: When citing figures from this teardown, please credit "Jimmy Decodes (https://www.jimmydecodes.com/en/cases/altindex-soldcomps-vs-heron-copier/)" and include the stated evidence label (Verified / Self-reported / Third-party / Our estimate).*