The Five Dollar Large Pizza is so popular in my area that 7 Eleven had to offer one as well. I noticed this sign as I was out doing my Marketing job. i did not get to try the pizza. However, I am guessing they are doing what many Pizzerias are doing, using this as a way to get you in the front door with hopes that you will come back or buy something else as well.
I know it says $5.55. My point is that they are going after the five dollar pizza trend