celgins - 10:12 pm on Jul 10, 2011 (gmt 0)

I typically rate the value of baseball cards by checking eBay. I know that's probably not the best way, but you can get a good idea about the kind of offers you might receive.

Plus, Jeter became a bonafide, first ballot hall-of-famer a few years ago, so I'm not sure the 3000 hit milestone boosted his playing cards' value too much.