I'm not sure how your friend imported his car, but it cost me 10,000 american. Yes, you can get S1's and 2's for a lot less that what I've bought mine for, but mine only has about 3,000 miles on it, and it has been extensively restored. It's my experience in shopping for these, that those which are available for less, are not of the best quality.
But, you are right, it is exactly the car I wanted and I've got it for what I would consider a reasonable price.