Thanks for the replies, as far as valuations online go:
Parker's says for 2002 3 litre 24v on 02 plate with 90000 miles £2305 franchised dealer, £1975 private (good condition)!!!
Desperate seller.co.uk says (for the same details) £3360 dealer, £2965 private
Usedcarexpert.co.uk says between £4450 and £5392
Whatcar says £3190 dealer, £2815 private
So most of these valuations are quite a bit lower than many of the ones that I've seen advertised; are they selling for these higher prices, or are the prices being asked aspirational?
To be honest, £5000 is more than I want to spend for a bit more weekend fun! (I've already got too many cars really, and I'm not intending to get rid of any others - Morgan too much fun, MX-5 too reliable and fuel efficient AND my missus loves it too much!)
The GTV looks great, but I'm of the opinion that you should never buy a tin top when you can get a soft top - just wrap up warm in the winter!