If you're new to GTIs, they do sound horrible when running, but I suspect this car has not been treated like it deserved to be.
The silver one on here is superb. Still a lot upgrades on it so perhaps get in touch with him and negotiate?
Or as above, the Edition 30 is the same spec car, bar the interior and wheels, although many Edition 30s have been tuned to death and abused, so again, you'll be needing the thick end of £9K for a good looked after one.