Sure, the Wii only costs $249.99, but how much will a house to play it in cost? $250,000? $300,000?
What about getting to that job of yours? $4000 minimum.
Cars will take too long to get home, so how much will that teleportation chamber cost you? $1,000,000 to build and $40,000,000 in research?
So sure it's "cheap," but the real cost is more like $41,550,249.99!