Does seem cheap, but it's done a few miles so it's fair.
What did it drive like? And what feeling did you get about the car and the guy selling it in general. That's usually a big sign. I once bought a car that looked spot on but I had a bit of a funny feeling about.... told myself it was nothing and bought it anyway. Had nothing but trouble with it ever since (It was an MR2 though!!).
If this is the first one you've seen, go and try another one just for comparisson. The first 1.8T I looked at seemed to drive nice, but when I drove the next one it felt quite a bit more responsive.