I would say you would get something useable and in half decent condition for 1.5k.
Dont forget though, these cars are all getting on for 8-12 years old now, so you would be very lucky IMO to get one in "showroom" condition, and if you did I bet you would be looking towards 2.5-3k.
If I was to sell mine, which I'm not at the moment, which is a FSH 98R 2.016v, 77k, copper GTI spec with aircon and sunroof, MK3 cupra wheels, full MK3 20VT interior inc steering wheel, and 20VT exhaust, few marks on the body but in overall Very good condition, I would be expecting at least 1800-2k for it.
Another issue is the prices of the MK3 20VT, they've come down in price a lot lately, and 4.5-5k will get you into one of those, I bought some parts off a lad who had bought one for £900 with a goosed engine, pick a 20vt up for that and you've got a half decent MK3 20VT for 1.5k.
I really like the MK2 2.016v, but they are not really a "popular" motor in the way of say, a golf gti or 205gti. As such people are perhaps not prepared to spend money maintaining them properly as they get older, hence the dog rough examples kicking about.
Bit of an essay!