for two people, with NO beverages, it cost a little over $100 to get out of there including tax and tip. just because it is a buffet, you will still want to tip because your table is being constantly cleared of used plates as you return again and again to the buffet.
as i recall, they have a carving table that serves prime rib and leg of lamb.
What is considered 'inexpensive' for you? The Universal Hilton dinner buffet has a lot of seafood choices (but no real steak) and will cost about $40pp, not including drinks, tax, tip.
What area are you looking for? Perhaps other Hounds can help you with some other recommendations.