people buy them the day of usually. plus if one runs out betjm throws up another.
i have done many many of these, but mostly for big games or something i definitely was watching but had no game opinion on.
one time I bought 40 squares $5 a pop all on same sheet for rose bowl. ended up winning 2 qtrs and made like 50$ profit LOL. but had a shot at winning all four I guess. heh.
-murph