Our baseball cards price guide! This page provides a price guide for the value of [ungraded] baseball cards. Most drawn from the MLB. The primary trading card manufacturer is Topps; however, many more are included. Years focused mostly since the 2000s, but ranges all the way back to early 1900s. Please consult my blog postings to better understand how I put this price guide together, in order to come up with the estimates for the values of trading card collectibles. Data drawn from eBay auctions of major consigners.