Sheldon said:

Noted authority on collectible hobbys, whose name I forget, had a theory that no more than 20% ever join a club for that hobby, 5 X 1500 makes it 7500!

But take into consideration that we have had around 8,000 "members" since the start of the club.....if we take out 3000 for repeat club members or family members who really didn't collect (this is just a guess) we would be taking 25,000 collectors out there!