Comp Buddy
Sold-price comps for cards you watch on Whatnot streams, in browser or iOS
Comp Buddy is a Chrome extension and iOS app that shows recent sold prices for cards while you watch a Whatnot show. It is built for buyers and sellers who need a quick value check before bidding or setting a starting price. The vendor states it is not affiliated with or endorsed by Whatnot.
Key features
- Searchable database of verified live sales by player, product, set, or seller
- Livestream comping and watchlist alerts
- Demand Board ranking cards by live bid activity
- Price history and sales volume trends
- Snip tool and auction snipes on the Pro plan
- iOS screenshot-to-comp lookup
Who it's for
Card collectors and breakers who price-check during live streams. Sellers can use it to benchmark starting prices against recent closed sales.
Pricing
Checked 2026-11-06 on compbuddylive.pages.dev/pricing: a Free tier at $0 and a Pro plan at $15/month or $150/year with a 7-day free trial. Pro adds the snip tool, auction snipes, and longer top-sales windows.
Sources
3 comments
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Buyer here, not a seller. I overpaid for a rookie card in a show last spring because the auction got heated and I didn't check anything. Found out later it sold for about half that the week before. Now I keep Comp Buddy open next to the stream. Search the player and set, see recent sales, decide my max before the timer starts. That's it. The free tier covers that for me. Pro ($15/mo) adds the snip tool and auction snipes. I don't need it, but if you buy a lot in shows it might be worth it.
"Decide my max before the timer starts" is the whole game. Good advice even without the tool.
Mostly. On iOS you screenshot a card and it pulls the comps, handy if you watch on your phone.
As a seller I use it to set starting prices. If the last five closed around $40 I don't start at $1 and pray.
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