In Finland, a pizza-buffet chain has been one of the most common all-you-can-eat experiences. However, the catch is that you pay extra for drinks. I find the pizzas are so incredibly salty that I suspect they are intentionally made such to force drink purchases. (Like the old salted peanuts at a bar trick.) The pizzas might initially look enticing, but the magic wears off after just a few minutes of eating there.