So I finally got around to getting my ass to the pawn shop. There, amid several dozens televisions and stereos doubtless sold before the police could track them down, I found the following:
Super Mario 2 and 3, NES, with slipcover and booklet
Teenage Mutant Ninja Turtles, NES, loose (the sheer nostalgia!)
Strider, Genesis, loose
Phantasy Star II, Genesis, loose
The lot put me out around $25. I'm not as good at dealhunting as some of the veterans here, but as a first attempt, I think I did pretty well.