Sawsheezle does pizza: Part 6 - cost breakdown

These are typical ingredients I have been working with. I am quoting average prices I can find at the store. Here are the ingredients I am using:

Canned whole tomatoes: $0.60/lb
Wegman's Mozzarella cheese (bought in 5 lb bag): $2.73/lb
King Arthur Bread Flour: $3.99/5lbs
Big Pepporoni: $7.49/lb
Sausage: $3.50/lb
Onion: $0.99/lb
Yeast: $0.50/packet

Other ingredients used: water, olive oil, salt, fish sauce, some oregano and basil for flavoring.

So here is the breakdown for 1 pizza:

Tomato sauce:  9 ounces = 0.58lb @ 0.60/lb --> $0.35
Mozzarella cheese: 1.5 cups = 0.375lb @ $2.73/lb--> $1.02
Pepperoni: 0.5lb = 46 slices @ $7.49/lb  -->  6 sliced used = $0.49
Sausage: 1/6lb @ $3.50/lb --> $0.58
Onion: 3 ounces =  0.1875lb @ $0.99/lb --> $0.19
Yeast: 1/2 packet @ $0.50/packet --> $0.25
Flour: 3.5 cups = 1lb @  $0.798/lb --> $0.80


Total: $3.68

So how much do you guys spend on these ingredients? I can get some of this stuff cheaper at times, but I essentially have hit the price floor on cheese, tomatoes, and onions. Equipment/startup costs were not included, but between the stone, the dough docker, and the peel I have spent about $55.

And here is said pizza:

Question: why are we not opening a pizza restaurant? The margins on this thing could be ridiculous.