I was the one that mentioned $2 for the ingredients for 1 cheese pizza. While $2 is still technically possible, I think it might be a bit dated, and clock in closer to $2.10 or maybe even $2.20. Still, it's less than what you're paying.
I have been buying ready to put the ingredients rolled out dough for about $1.25
There's your problem. Dough for a 16" NY style pizza should only cost about 30 cents, if made by hand. Wholesale cheese, by the case, should be as low as $2/lb. What brand cheese are you using? It could be time to source another brand from a different distributor. 10 oz. of $2/lb cheese is $1.25. That leaves .45 for sauce. I haven't priced tomato magic or 6in1s lately, but, the bulk size should bring you in around .45. Even if you can't find mozzarella for $2 and it's closer to $2.25, that's still $2.15 for a pizza.
Homemade dough is more labor, but the end result is far superior and you'd be spending 1/4rd the price in raw materials.