I bought mine direct from Prostar. I just called them up, and got them to ship it to me. I was doing some work in Boston at the time, so it was perfect.
You’ll need to be in the states for this to work; they only accept American credit cards, and only ship to USA (at least, thats the way it used to be).
Also, you have to be careful – not every Prostar is the same as an Alienware – it’s a question of doing the research and finding the good ones.
It’s a different story in Europe though. Tech here is just very expensive across the board, and if you want good stuff you have to be prepared to pay a lot for it; that’s just the way it is.