Well there should be something like an appraisal of the used vehicle, but PW at this stage can't be responsible, since PW runs on only one computer guy ie JAG.
If there would be a group of people doing the individual work than its possible. Forexample, a group of people managing the computer work, a group of market analyzers , people working on the upcoming models and so on.........
Hence, the price of the vehicle NOT solely is dependent on just the vehicle condition, mileage, model and options but a number of other stuff.
Therefore, not feasible at this stage.
Allah hafiz.