Yeah mine was 1800£ nearly 6 years ago lol
There was 2 last year over here 8.5 and 9k both white and I've seen them range from 6-12K the last year or so.
As you know yourself the most important thing to check for on a GT is rusty sills, mine is currently dancing with Mr Mig
Blimey they have increased haha, ive been lucky over the years the ones ive had the sills was good just crap handbrakes haha, Hopefully find a rust free one