Same, I sold most items of value to pay bills back in the day. So while I still have a decent collection, most of it is relatively worthless.
I'd be more interested in "the ones that got away", as in the games we miss the most that we had to sell/are gone now/for whatever reason.
For me it's probably MKR for the Saturn, which was easily one of the funnest ones I've sold. I had a Panzer Dragoon Saga (bought new at release) that I sold at one point, but honestly, I'm not sure I'm really interested in replaying that one. Would love to have MKR again though.