A large, 2-topping pizza is normally $14.49 at my local Domino's but they normally have a carry out special where you can get a large, 3-topping pizza for $7.99 from Monday through Thursday. They also offer a large, 3-topping pizza for $12.99 all week long.
Basically, you can get a large Domino's Pizza at Little Caesar prices with this deal.
It looks like you have to order online to take advantage of the deal but it's possible your local franchise might let you use the deal over the phone or in person if you mention it.
Photo via Domino's.