The Whatnot price checker that shows your flip profit — live.
Ruby is a live Whatnot price checker for buyers and flippers. The second an item hits your Whatnot stream, Ruby pulls the real eBay SOLD comps for that exact item and shows your estimated resale value and flip profit — right on the screen, before the timer hits zero.
Know the resale value before you bid
Whatnot auctions end in seconds, and it's easy to overpay when the chat gets loud. Ruby gives you the number to bid on: current bid, realistic resale, and estimated profit, with a clear GREEN (buy) or RED (pass) call. You bid on real Whatnot comps, not adrenaline.
Works on every category, not just cards
Ruby prices Pokémon and sports cards, graded slabs, coins (NGC/PCGS tiers), and collectible toys & merch — all off real eBay sold prices. A Photo Match badge confirms the comp is the exact same item, so the price you see is the price that item actually sold for.
Private and accurate by design
Ruby runs on your own Mac and is 100% read-only — nothing from your screen is ever uploaded. If it can't confirm the item, it says "no price" instead of guessing. Accurate-or-nothing.
Whatnot price checker FAQ
Is there a price checker for Whatnot live auctions?
Yes — Ruby is a live Whatnot price checker that shows real sold comps and your flip profit on the stream in real time.
How does Ruby get Whatnot prices?
Ruby reads the item on your live stream, matches it to real eBay SOLD listings, and shows the median resale value plus your estimated profit versus the current bid.
How much does Ruby cost?
Ruby is $99.99 one-time for lifetime access, or $30/month — you never pay both.