I concur with the others - make sure you find something you love before you leap.
If you are looking for a pre-war HOFer from a well-known set where the prices aren't crazy you might take a look at M116 Sporting Life as discussed recently in a thread:
http://www.net54baseball.com/showthread.php?t=197547
Good luck - make sure you post your card when you get it! (and note that it is where your $400 went)