I searched and didn't see a thread for sports cards. I have a ton, I mean a ton of sports cards, all sports from about 1990-1999. I know those are considered "modern" years and not valuable as they were massed produced. But, I also know there are those occasional rookies and holos that are worth something. I tried searching, does anyone know a website to check a cards value? Is the only way to check value to go to a legit website selling cards and see how much they are selling for? I am not sure how else to check.