I would agree with Volmars, if you are in no hurry you will probably find cheaper and better in the UK.
What kind of service history does the one you are looking at have? Does it have all the keys including the master key?
If it is well looked after it could be a good one, I had a 97 GTV with 90000 miles on it and it was perfect, but then I spared no expense in keeping her well....
You do need to know what to look for because it does not take long for a poorly maintained one to deteriorate. Check out the buyers guide on this site and also here:
Alfa Romeo GTV Buyer's Guide
Good luck...!