When you drive off the forecourt, the price drops immediately to the value of the difference between the price the dealer sells cars and the price they buy cars, if this makes sense.
Try buying Euro or US Dollars at the money changers and then sell them back immediately - see what happens...
Huh? Don't think you've got that right.
Buys @ £10k, sells at £15k so car is worth £5k - that doesn't make sense - tho' I think I know wot you mean...
Only one "p" in drop!