yeah it also really depends on the general condition of the car and the spec, a luxury pack with full leather, heated front seats, massive moonroof will cost a couple of grand more than a stock GT in similar condition/km
high km always puts alot of people off due to resale and the thought of impending engine replacement towards the mid 200,000 k mark
like said above, try and get a personal loan where the car is not assurity on the loan & you can choose whatever you want