Cheers Ricey!
The best zed I've come across so far for what I'm after is an 04 GT, 33k miles, new exhaust and UpRev'd for £10.5k, which I'm thinking is a bit much but not totally sure? Looks in perfect condition and well looked after but I'd have though it's £1k overpriced?
Also, I've come across two that are pretty very similar in spec, age, condition but one is £2k more, with 25k miles less. Does the milage have any sort of bearing/knock-on effect on the car or is it like you say, more to do with service history and how its been ran?