I wouldn't restrict my choice of a used Cooper S by insisting on HK and I certainly wouldn't pay any more for one with it fitted. Okay, so the HK system is better than nothing, but the nice thing about the
original generation of Cooper S is that it is very easy to upgrade the original sound system to something
noticably better than the HK system for very sensible money.
In fact, if sound quality is important to you, you'd probably wind up binning the HK system anyway and going to see Mikeythemini to get a proper sound system!
NewMINIStuff.com
While you're at it, check out the Classifieds on here.
http://www.mini2.com/classifieds/sho...p/cat/2/page/1
Here's a good one at around your budget with a sunroof, a Sony CD player
and a nice colour:
http://www.mini2.com/classifieds/sho...uct/2836/cat/2
Tigger.