Hi, there is danger here, for a start do not let your daughter go alone on a test drive, ask the buyer for proof of Identity, If you do take a cheque the car stops with you until the cheque clears, even a bankers draft, make sure she has a male / female friend with her, make sure you spell out the conditions of the sale, Eg/ bought, Tried, Tested, And approved, get a deal sheet written out & signed. point out any bumps on the car etc so they cannot come back & say this has been done etc, do not believe their story even if they say their father is the pope, I, like many try & give out advice to people but people still get caught, do not let your daughter be one of them. as regards her price, do your search on Ebay etc to what sort of price you want for the car then deduct what you think fit.