I really wanted an Oculus Rift.  I saved up enough and had to wait about a week before it was in stock at the store
I did!  It is by far the coolest thing I have ever bought!
yeah, I have it plugged into my computer.  I cant tell you, or even begin to explain, how real everything feels when you use it.
It was $400, having a computer that can run it is the expensive piece