here in SE MI, they run from $20 and up, tables extra. some supply the tables - hit and miss around here.
I had a booth one time near someone who sold candles and the scents made me sick (allergies). Since then, I've requested to be place away from any fragrances and have actually gotten better spots (not in the middle of the room). Doesn't mean it's helped with sales but craft shows around here have been horrible the past couple of years. People are looking for "cheap" but good products. Most of what I sold was under $10 items.
I usuall made my table money ($25-$30) plus another $20-$40 more. So for me, it just wasn't worth sitting there all day and all the prep work.
Good Luck !!!