Wow BA! That's a lot! I have approx. 15,000 cards. They are almost all from the late 80's and early 90's. I have a couple of complete sets simply from getting packs of cards as a youngster. Almost all of my cards are baseball cards, but I did get into basketball cards for a bit towards the end of my collecting days (about 1,000 cards that aren't baseball). I haven't looked at my cards for probably 5 years... I used to have my "book of value", and every card I had in there was at least $5. I full book with 120 pages... 8 to a page with a price sheet in the middle sleeve if people wanted to buy a specific card. I still have that book, as it was, with prices from a July 1999 Beckett... LOL