I know i had luck but I bought a 2001, 34GTT for $11,500 with 11 Months rego, splitfire coils, Iridium plugs, apexi pod, nismo exhaust, FMIC, coilovers and clean as. It is under 100k km's on the clock with Major service done. My mechnic without prompting was impressed with it's condition. I have had it for 6months and driven it every single day. As I said maybe I'm lucky but there was a Black 34GTT on carsales for the same price with factory sunroof a month back and it was sweet also.
$17,500 is way too much now days.
IMHO - Hang on to your cash and look aroound a bit more. If your new to this find someone you trust who srsly knows cars.
I have a 32 and unless you have deep pockets def go a 34 GTT.