The name says it all - they sell deep dish, square pizzas. The flier tells us that there is 30% more pizza, though my 8th grade geometry tells me that it's actually 27%. I guess round numbers sell better. The pizza itself is really good. I think calling it deep dish is stretching it, similar to saying "30% more pizza". The toppings are piled on, no question, but the fact that they can deliver it to you in 40 mins says it all. Regardless, the pizza is high quality and a 10" fed me for 3 1/2 meals.
BTW, since they don't have an online menu, here's some more info - they do sell round pizzas, which are 2-for-1 and start at 17.25 (for a 10" pepperoni). The square/deep dish pizzas start at 13.35 for a 10" cheese (13.65 for a pepperoni).