You willing to pay 7,000 for a high quality car-a plum. The current price of used cars is 4,500, and 4 of 5 cars in the market are lemons, meaning that 1 in 5 is a plum. a. suppose you could pay a finder fee to a personal shopper 1 mechanic who will find you a plum at a price of 4,500. The maximum you are willing to pay as a finder fee is.