Yeah I am a mac user. I got mine from ebay, it was an ex-display model so it was slightly cheaper but not less of a quality machine. Very happy with macs, and I have 2 now.
That's about the best price you can get a new one of those for. And you won't be disappointed.
I'm a mac lecturer, if it's specifically a desktop you want then it's a great buy, but you can get it cheaper else where. but if you're not fussed and going to spend that sort of money you might as well get a new macbook pro.
You can get american mac's shipped in for a few hundered quid cheaper as well, they work perfectly fine. Try amazon or play.