We make pizza here with stuff we normally already have on hand. Mozzarella cheese, bacon, tomato paste, individual spices: oregano, basil, onion powder, garlic powder; olive oil. We don't have to buy anythign special. And it comes to less than $2 for a medium size pizza (enough food for the both of us and the dog).
We make just enough sauce with say a heaping tbsp of tomato paste .. we porrtion the tomato paste with plastic wrap and baggy and freeze. It's like 8 cents of tomato paste. Sprinkle in a little oregano , basil, onion powder, black pwpper, garlic powder and a drizzle of olvie oil into the sauce... add like 15 cents more for the spices and oil. So like 23 cents for the sauce for the entire pizza, and nothing extra to buy.
We use bacon for our pizza topping.. about 4 slices cut up into pieces and friend 1/2 way before topping. We always have bacon here. Now we are making our own bacon for $1.58 /lb out of pork butt and pork loin. So the bacon cost is like what 35 cents, for the amount we use.
We also top with very thinly sliced white onion, the remainder of which we wrap in plastic wrap and throw in veggie bin, preserving the onion for weeks for other meals. The same with green bell pepper if we also use that for topping.
We also top with a bit of basil from our garden which we food process with olive oil and freeze into ice cubes. Has a fresh basil taste and costs next to nothing since we grew it here in the summer.
I challenge you to figure out a way to make pizzas for under $3 -- or $4 depending on size of pizza. Because many of us here are already doing it.