your money mate. if you look hard enough you can find much cheaper 34s in the same or near condition.
i helped a mate get a 98 34 GT-T 146ks, 3k full 350z style leather interior, fmic,bov,boost t,volk racing 17',Full Kakimoto exhaust, always serviced by gavin woods. same owner for 6 years and just all around mint.
12k no shit. i know ks were a bit higher than what you are looking at but thats an example of whats possible.
good luck mate !