Actually probably more like a 3.5/5
The pizza is ridiculously cheap, however you're definitely going to want to get some toppings... I'm normally totally down with plain pizza, but their cheese and sauce are just kinda humdrum, and not quite good by themselves.
Besides the pizza, I've only ever tried a calzone, and it was a bit undercooked. It looks like they have a lot of variety on the menu however.