Baseball Cards Price

What is a good website to find the price of baseball cards on?

My girlfriends father has some very valuable ones, or so we think, is there any other way besides ebay. Ebay does not have some of the cards such as 2004 Upper Deck r-class Jersey #MR Manny Ramirez (if anyone knows what that is worth that would be helpful too). Please let me know and thanks.

Public Comments

1. http://winsummertimeballtickets.com/Guess.aspx/lucky%20_98
2. This website is detailed and lists prices of most cards in existence. http://www.deanscards.com/