This makes sense only if you only ever go to one party where games are played or don't mind wasting $20-30 every time you want to play a game at a party...
Don't be silly. I go to parties with about the same crew most of the time, so replay value is not too desirable. And $20 is too much for a party game? How much does the food/drink cost? $30 is trivial, yes I do spend that on every party thank you.