The FUNI DBZ singles raped my cash. The sad part is I never even got to finish purchasing all of them, although I am tempted to purchase the rest (Frieza singles, Cell Games singles, Buu saga, Fusion Saga, Kid Buu saga ) Ugh. I've also purchased the movies (screw the double feature sets..) and I've been picking up the season sets as they're released. Somewhere down the road I'll probably be picking up the Dragonbox R2 singles as well, which will once again buttfuck my wallet

. I purchased volumes 1 - 42 of the first print releases of the english tankoubon, and I'm now aiming to collect the entire Kanzenban set.
The most embarassing Dragonball related merchandise that I've purchased is probably throwing away about $600 + on the American DBZ TCG. The goofiest part about it is that I didn't even have anybody to play the damn game with. *smacks forehead.
In terms of purchasing Dragonball/Z/GT figures, I've only ever aimed for the REALWORKS figures. Love em' to death for some odd reason.
All in all, I've probably thrown away 2 grand or more for the sake of quenching the DB thirst I have. I guess it could be worse?