I found it quite ok, I think you get excellent quality for what you pay. Like most places in Europe, it can be a bit expensive, but totally worth it

It depends; but if you look for something nice and really not expansive, try the Brek, just on the Pizza di Arena, it's a kind of self service, but very good, in a superbel ocation.

depends on what you're looking for. if you're lazy and want to stop in piazza delle erbe, or near the arena, be prepared to pay for the view. pizza is always a nice way to eat good and spend less. average: from 10€ to 20€ per person. but you can easily go up to 50€. no tips - they're no required, and tourists always tend leave a lot: doesn't worth it! pay for the meal only (and few Euros, if you have any left) waiters are payed for the job.