Generally, for any value of things, I've been using Craigslist. That seems to be where the majority of "the market" is right now.
OK now let's define market. There are many catagories. Retail on a new car dealer level, Retail on a used car lot level (like a mom & pop used car lot not a new car dealers lot), wholesale at auction, wholesale to local small used car lot dealers ect... Prices and catagories are all over the place.
I don't put alot of significance to used car advertisements such as Craigslist as these are non inspected cars and you don't know what the actual selling price is compared to the asking price. And why is it for sale there? Someone need quick money for a bad habit, mortgage payment, get rid of it quick before the divorce, sell it to some poor bastard because it is at the end of its life ect, girlfriend that has her boyfriends car in her name because he has a bad driving record and she just caught him cheating so now she sells the car fast and cheap (we all have heard the stories of buying a car for one dollar)... Don't know its history unless it is inspected. Carfax only tells you the info it has in its database. If someone pays cash to fix heavy collision damage, you'll never know unless someone inspects the car. Prior collision history and quality of repairs have an effect on a car's value.
The good used cars are on a new car dealers used car lot. It's all down hill from there. A majority of the others are the cars that the new car dealers don't want. A wholesale person gets it from the dealer, finds out why the dealer did not want it, sells it at auction or to another wholesale person and the "food chain begins".
In order to determine a true market value for a specific vehicle, you first need to put it into a specific catagory for what the vehicle actually is.
