I'd say it totally depends on how desperate you are! Advertise early at a higher price to be negotiated down.
I paid £1100 for one, but it had 170k, needed work for MOT, and I knew the person. They have replaced it with a 2.0gti, with 70k, and are paying £3k.
Being that yours is a 1.8T, it should be a bit more desireable. I'd start around £3k and see what interest you get. If you have the standard parts, get them on, sell the rims and suspension seperate. The car will sell easier and you'll get cash for the selling bits.
