There are many choices for places to eat in Palermo. Many have good food and many have good prices too. The Pizzeria Bellini has one advantage over most - its open on a Sunday!!! Good grief, finding somewhere open on a Sunday night in Palermo is not easy and this place, although not the cheapest, was celebrated as though its food was free.
Anyway, they have a reasonable, self-service vegetable anti-pasti buffet at 5 euro, which is good value to start. Next you can go with the pizza, pasta, or meat/fish. If you are hungry, you have to go with the pizza. We went meat/fish and, although the quality was high, the quantity was not. My seafood mixed grill consisted of three prawns, four calarmari, and a small piece of grilled tuna (10 euro). With that, you get no veggies, chips, potatoes - nothing save for a lettuce leaf. Luckily, we were not starving after we got our full value from the anti-pasti buffet. Wine starts at about 9 euro a bottle and credit cards are accepted.
Actually, this place does have another strength over most other Palermo eateries. It has an open courtyard that is set well back off the main Via Marqueda, which means it can offer reasonably civilized, open-air dining - something that the constant din of the traffic normally puts the dampers on, as most other places are closer to the street.