How often do you purchase retro games? and how many do you buy?

I purchase retro games every month and usually get two or three games at a time.

I buy them when I find them or see a good deal on them. I really don't have a set amount that I buy or when I buy them. I work at a Goodwill store so if something catches my eye there I pick it up also I have a retro game store near where I live. Usually I pick one up when I want to play that particular title. Like right now I just finished Castlevania: Bloodlines on the Genesis and now I am looking for Portrait of Ruin.

Since I still have a ton of my old Sega Genesis, NES, SNES, N64, and GB games from when I was a kid I dont have to really buy too many. The ones I get are usually ones that I rented or friends had when I was a kid but I never owned them so its not like I have to rebuy any of my old retro games.