I use frozen dough I get from the grocery store.
It is just under $3 for two 16oz dough balls.
A little more then Sams per dough ball but you only have to buy 2 instead of 14.
My heard about it from a buddy of mine who does make his own dough but also uses this at times and says it is almost as good.
The company it is made by is "Real NY Pizza Dough" http://rnypd.com
The store carries another brand that comes in single 16oz for just under $1 ea but I have not tried it.
My buddy says it is not that good and I am happy with the rnypd so paying $.50 extra is no big deal.
I know it is not a big help but some frozen doughs are good and others are not.
I guess the best suggestion I could give is that if they use it in store, buy one of their pizzas.
If you like it, buy the dough balls.