All Inclusive fees
As the others said, the fees can vary alot. That being said, usually the more expensive AI fees have more to offer. We go to an AI resort in Riveria Maya which is one of the more expensive ones and some have totally lambasted me for. But, there are 7 gourmet a la carte restaurants: Italian, Mediterranean, Carribbean, Asian, Fondue, Mexican, and one with a menu that changes daily. In addition to that, there is a pizza/burger grill, mexican grill, organic sandwich/smoothy bar, gourmet snack bar (one item is: brie pizza w/ raspberry couli). Plus 24 hour roomservice that is fantastic. There are 12 bars including a martini bar. The liquor is top shelf.
The service and food would compare to any upscale restaurant in the states. I don't know where you are from, but here in Scottsdale, it would be Mastros, Ocean Club etc.
So for $50 per day, it's will probably be 1-2 buffet type restaurants.
One gets what one pays for.