Joe's is not the best pizza, but it is really tasty and very reasonably priced.
I would say the same thing about their eggplant parm and chicken parm sandwiches. Clearly these were frozen things deep fried on the spot on decent bread. For $5 though I couldn't complain.
Bottom line: If you want some good and cheap eats, come to Joe's. If you are expecting knock out pizza or italian fare, go elsewhere, but be prepared to drop more dough.