GameUser-16-32-128
Elemental Master
Outrunner

That was the only place unfortunately. They closed about a month ago on a Tuesday sadly.

There aren't many in the center city area besides thrift stores, but there are a couple places in malls. There's a retro game store in Neshaminy Mall, another in Franklin Mills, and I think one more in King of Prussia. You'd best try those places, other than that, unfortunately no.

There is a huge flea market in the summertime though in Berlin, NJ at Berlin Farmer's Market that I go to that has a lot of old games to buy from a bunch of different people.