Trader Joes sells pizza dough for fairly cheap. It's $1 for enough dough to make one large pizza.
I haven't made dough from scratch, but I like the convenience of Trader Joe's dough.
(I know lots of people don't have a Trader Joe's nearby.)
I asked at a a local pizza place and they do this, too, only $1. Pretty cheap and really makes it fast. I am a health nut, though, and like to make my dough 50/50 whole wheat and white, and I like to save the buck also :)