[Porsche-O-Phile]

KBB is definitely slanted to favor dealers. I have found their trade in values to vary by as much as 15% from the private party sale values.

The whole valuation/depreciation thing is a game anyway, mostly to keep people beholden to bank loans in perpetuity. I don't get too hung up on KBB or other published values and tend to watch comps on eBay, CL, etc. instead. If I like the car and think its a fair price I'll buy it. I also refuse to buy on the steep part of telnet depreciation curve. For the cost of a "new" run-of-the-mill appliance car POS I can buy two good condition used cars and put extra $$$ in the bank when done. It's not that important to me. I like not making payments.