SoldComps.io vs CompsAPI

Comparison

	SoldComps.io	CompsAPI
Sold data?	Yes, eBay sold listings [4]	Yes, eBay sold listings [1]
History window	90 days (days=1 to 90) [4]	Up to 1,095 days (3 years) on every plan [2]
Sales per call	Up to 200 (you set limit; default 50); stats use every match [4]	Up to 240 (size 10 to 240) [2] [3]
Free tier	2,000 credits a month, no card (about 28 searches of 50 sales) [5]	100 requests a month, no card (paging to page 10) [2]
Price per 1,000 searches	$7.00 on Starter ($5 for 50,000 credits), $6.51 on Scale; prepaid $8.40 [5]	$1.80 on Starter ($9 for 5,000), $0.79 on Pro; less on annual billing; no overage (quota pauses) [2]
MCP server	Yes, remote at https://www.soldcomps.io/mcp; no key needed to try [6]	Yes, hosted at api.compsapi.com/mcp with your API key [3]
Best Offer accepted prices	No. Accepted Best Offers whose price eBay hides are flagged and left out of the median, not shown [4]	Yes, best_offer=1 returns the price the sale closed at, on every plan [2] [3]
Marketplaces	eBay US, UK and Germany (eBay only) [4]	eBay US with other eBay sites merged in; pin US, UK, DE, FR, IT, ES, CA or AU; prices in USD [3]
API access	REST GET /v1/sold with a Bearer key, OpenAPI 3.1, MCP [4] [6]	REST with a Bearer key, Google Sheets template [1] [3]

How the price column is worked out. One search returning 50 sales, one request per search, at each product's published prices. SoldComps.io: A 50-sale search costs 20 + 50 × 1 = 70 credits; Starter: 50,000 credits ÷ 70 = 714 searches for $5, so $7.00 per 1,000 searches; Growth: 300,000 credits ÷ 70 = 4,285 searches for $29, so $6.77 per 1,000 searches; Scale: 850,000 credits ÷ 70 = 12,142 searches for $79, so $6.51 per 1,000 searches; Pay as you go: 50,000 credits ÷ 70 = 714 searches for $6, so $8.40 per 1,000 searches; Fewer sales cost less: a 20-sale search is 40 credits, $4.00 per 1,000 on Starter. CompsAPI: Starter: $9 ÷ 5,000 requests × 1,000 = $1.80; Growth: $29 ÷ 25,000 requests × 1,000 = $1.16; Pro: $79 ÷ 100,000 requests × 1,000 = $0.79; annual billing lists Starter at $7.50/mo, so lower still

Where CompsAPI is better

• Much cheaper per search: $1.80 per 1,000 on its $9 plan, $0.79 on its $79 plan.
• Up to 3 years (1,095 days) of history on every plan, free included.
• Accepted Best Offer prices with best_offer=1, on every plan.
• Up to 240 sales a request, with time-based paging.
• A free Google Sheets template that returns the median in a cell.

Where SoldComps.io is different

• SoldComps.io returns the median and middle half (p25 to p75) with lots, for-parts units, replicas, accessories and outliers flagged and left out of the stats.
• SoldComps.io has a remote MCP server at https://www.soldcomps.io/mcp that Claude, ChatGPT and Cursor can use with no key; add a Bearer key to bill your own credits.
• Prices come back in the site's own currency (USD, GBP or EUR); CompsAPI returns USD for every site, with the native amount as an option.
• When monthly credits run out, prepaid credits take over; CompsAPI pauses until the month resets (no overage).

When to pick which

• Pick CompsAPI if you need history past 90 days, accepted Best Offer prices, a Sheets formula, or the lowest price per search.
• Pick SoldComps.io if you want the median and range cleaned for you from recent eBay US, UK or Germany sales, prices in local currency, or an MCP server an agent can use without a key.

Try SoldComps.io

Look up any item free on the sold comps homepage, call the API with a free key (docs; 20 credits per search + 1 per sale returned), or add the MCP server to your agent:

curl "https://www.soldcomps.io/v1/sold?q=nintendo+switch+oled&condition=used" \
  -H "Authorization: Bearer sh_live_xxxxxxxx"

claude mcp add --transport http soldcomps https://www.soldcomps.io/mcp