Underpriced AI
Photograph it. See what it actually sold for
Photograph the item. Underpriced AI shows what it sold for and the sold listings behind the number, then lists it on eBay from the same screen.
Graded weekly against 551 real sales, published win or lose. See the grade.
How it works
One real silk tie, from an estate sale to a sale.
Take one photo
A silk tie bought for $1.25 at an estate sale. One photo is all a scan needs.
Real numbers, updated live:
People priced items here
Of items priced
Real sold listings behind the number
List once, sell everywhere
One listing goes to eBay and Bonanza, and the form is filled in for you on Facebook Marketplace, Poshmark, Mercari and more.
Avon 1926 Checker Cab Wild Country After Shave Decanter, 5 fl oz
CollectiblesGood
Title, description and photos, written once.
- eBayLive
- BonanzaLive
- Facebook MarketplaceFilled
- PoshmarkFilled
- MercariFilled
- DepopFilled
- VintedFilled
- WhatnotFilled
- OfferUpFilled
- EtsyFilled
Live: we post it to your own eBay or Bonanza account. You check it first.
Filled: our free Chrome extension fills their form on your computer. It goes live when you tap Post.
ChatGPT answers. We help you sell.
ChatGPT and Gemini guess a price, then the chat ends. We show the sold listings behind it, list it on eBay, fill in the form on Poshmark, Mercari and more, and track it until it sells.
Love ChatGPT or Claude? Keep them. Add Underpriced AI to your chat and ask for real sold prices without leaving it.
The price
From real sales, checked every week.
Your number never rests on one feed. For US and UK scans a specialist eBay sold-price API goes first and asks again with broader words when an item is described too specifically, and an independent backup service steps in if that call fails (in Canada, Australia and the larger EU markets that service goes first), and our own archive of over a million sales covers the rest. Some categories add a specialist source, such as Discogs for records or Poshmark for fashion.
Read moreEvery week we check our estimates against what items actually sold for and publish the result, wins and misses, category by category. You can judge the number instead of taking it on faith.
Read moreThe listing
Written once, posted everywhere.
One click fills in a listing on Facebook, Poshmark, Mercari, Depop, Vinted, Whatnot, OfferUp and Etsy from an item you already priced. The extension is free for Chrome and Firefox.
Read moreWhen you publish to eBay, the listing joins your existing Promoted Listings campaign at the ad rate you already chose, instead of letting eBay apply its own suggested rate to it.
Read moreYour way
Where you work, and how you pay.
Add us to Claude, ChatGPT or your coding assistant and it can price an item, pull sold comps, say whether it is worth buying and draft an eBay listing, all without leaving the chat.
Read moreBuy scans when you need them: 5 for $3 up to 250 for $70, and pack scans never expire. No subscription needed, and plans start at $5 a month if you scan every week.
Read morePeople who stopped guessing
Hours of looking things up, prices that were a guess, listings typed out by hand. Here is what sellers say now.
★★★★★4.9from 9 reviews
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