I make a nice inexpensive cheese pizza. We've started giving Finn some gluten these days (!!!) and my children loved the most recent incarnation of pizza.
I buy my cheese in bulk for $2.99/lb.
The tomato paste was about .30/can at Aldi. The pizza sauce recipe was easy and tasty! It does use a fair amount of olive oil, but I buy mine on deep sale, so it's pretty inexpensive.
This is my favorite gluten-filled pizza crust recipe.
I'm not going to try to break down the ingredients and determine how much the pizza costs to make (maybe one day I will--no promises). But I'd guess that it costs about $3 for two large cheese pizzas. The dough can be mixed up the night before or in the morning. The sauce just sits around and cooks. I shred my cheese and freeze it so it's ready to go.....so it's a very easy meal.
I do like to add spinach to assuage my guilt at feeding my children cheese and bread for supper, or sometimes I'll steam broccoli as a side dish. And there's always a lot leftover for their lunches for a few days!
And now I have a vegan pizza on the cheap, too! My husband has started making his own hummus in large quantities--definitely cheap. I press out the pizza crust, spread on a layer of hummus, spread on a layer of pizza sauce, then put the toppings on (I like to roast veggies, slice tomatoes, etc., which is not very cheap during the off-season, but is free during the gardening season!). My husband LOVES the pizza made with hummus instead of cheese.
Much healthier and thriftier than Domino's!