neuse: yes it`s a big one, nearly 2m x 1,2m. last out for 25 pcs of bread.
Upstate: I dont know the prices of brick stones in the States, most expensive is a fire resist cement, but you also can use loam , mixed with a bit salt to fix the stones. The price will depend at the measurement you will take.
In my garden I build a smaller one, maybe 1,2m x 0,8m, took me two weeks all around, made by my self without any other people.
The floor is made with fireclay, also expensive but make sense
Hawkdancer: sorry I have no plans, but if you really want I can make a sketch.
First I build the floor, than I made a stencil for the round arc, all others is „free hand“ build.
Leroy: we made al lot of Pizzas in the past, always funny is when everyone make his own,
the pics are from my home oven