philliesphan many good points, as for GAI I found this article online:
http://www.cardboardconnection.com/c...bal-authority/
I think I will try buying unopened packs on ebay and getting them graded and if they were altered see if I can get my money back, its worth a try. As for modern packs, it is too hard to tell which years will be more collectible then others but in general very little modern boxes are left unopened and its hard to come by any sealed boxes so the demand is there IMO.
Orioles1954 I didnt know fun bags exisited, I did a quick search and there not to common and they do go for a good amount of $ at times.