I'm thinking of buying this iBook off eBay: http://cgi.ebay.com/12in-iBook-G4-8...00QQihZ016QQcategoryZ4602QQrdZ1QQcmdZViewItem It says it has a busted logic board, but otherwise works fine (apparently meaning replace the logic board and it'll be all set. The only problem is that I am worried about getting scammed. Does this seem like a good idea? Also, how much does it cost to buy a new logic board? I could install it myself, I just don't know where I'd go to get the part. Thanks in advance for the help.