Effective immediately, all Mavin accounts will be shut down. This is the first step in winding down the company, and we will be wiping all private user data from our servers.

Look up what your stuff is worth. Get real market values based on what it sold for in the past and what it's currently selling for. Generate an appraisal by choosing comparables that match the condition of …

The average value of baseball cards is $7.17. Sold comparables range in price from a low of $0.16 to a high of $434.51.

Apr 28, 2025 · What people are saying... Folks at Mavin have a great site that can definitely help you price your sales/buys. Great place to go to check out current values on your stuff! ~ @Collectosaur

The Standard Catalog of Baseball Cards is the trusted price guide for more than 20 years. This baseball card collectors info book contains 500,000 listings of baseball card values from approximately 5,000 …