About Comp Research

A free, simple tool that helps collectors see what a coin or trading card is actually selling for, and buy it on eBay.

Comp Research is run by a longtime collector and active eBay seller. After years of pricing coins and cards before buying or listing them, the same habit kept coming up: look the item up, see what comparable ones are going for on eBay right now, and decide. This site turns that habit into a tool anyone can use.

What it does

Type in a coin or trading card, and Comp Research takes you straight to its current eBay listings, so you can see real, live prices and buy on eBay. We focus on the categories we know best: US coins, paper money, and trading cards (sports and collectible card games).

How we make money

Comp Research is a member of the eBay Partner Network. When you click through to a listing and make a purchase on eBay, we may earn a small commission, at no extra cost to you. That is the only way the site earns anything, and it never changes which listings you see, which come straight from eBay's live search. See our full affiliate disclosure.

Learn the basics

New to pricing collectibles? Our short guides cover reading eBay sold comps, understanding coin grades, and valuing a graded trading card.

Contact

Questions or feedback: [email protected]