Your edge as a collector.

Collector's Advantage helps you find the comics and cards you're after, pay the right price, and see what your collection is worth, in every grade.

ComicsSports cardsTCG
Browser extension

Know the value before you bid.

  1. Open a listing

    Browse eBay as usual with the Collector's Advantage browser extension.

  2. See what it's worth

    A panel shows the value in that grade, the typical range, and a verdict on the current price.

  3. Get alerted to deals

    Watch the items you want. When one is listed well under value, you get a notification with a link to it.

Features

Built for graded and raw collectibles

Value in every grade

Raw or slabbed, CGC 9.8 or PSA 10: see what the exact copy in front of you is worth.

An instant deal verdict

Steal, good, fair or overpriced, plus the most you should pay, for auctions and Buy It Now.

Alerts when it's under value

Tell it what you're hunting for and get a notification when one is listed for less than it's worth.

Status

In development

Collector's Advantage is being built and tested by collectors for their own buying. Early access for other collectors is planned.