Dusted off the SNES

So I was cleaning the apartment the other day (still am - it's a week-long process) and came across my old Super Nintendo game console.

I hooked it up and - surprisingly - it works fine, even for being 15 years old. My only problem: adding onto my collection of six games.

Can anyone recommend a local store that sells used SNES games, preferably cheap? From what I can tell, sellers on eBay and Amazon are asking a bit more than what's reasonable.