To me, this is a restaurant:
Maitre'd greets and seats you
A waiter takes orders and serves food
There is no 'buffet/all you can eat/self service'.
There is a wine list, not a laminated card of 'drinks'
Menu includes entrees, mains and desserts
If the place doesnt have all of that^, it is not fit for my custom. Thats just me. I know alot of people are happy to eat shit but you do the math:
30$ for a main and entree, lets say 10$/20$.
How on earth can any place hire all those people.. the waiters, the maitred, the managers, the multiples of chefs, the lease, the power and gas, and then pay for all the ingredients of your meal, and charge you anything less than 30? They cant.. unless they cut back on some of those staff and/or cut back on the quality of product in the food.
I live in Auckland NZ which is full of ridiculously good restaurants. Food is pretty cheap here and super high quality, our meats and dairy are the best. Even with the cheap cost, and our low minimum wage, and how badly chefs get paid here(why i dont do it anymore), a place that serves good food and has all my requirements cannt be found for less than 30-40NZD. So.. yeah, with knowledge that my food is about half sometimes of what americans or other westerners would pay.. its just not plausible that you can receieve quality food for cheap.