Gran Turismo 5. Copy your save file, buy an expensive car, send it to your 2nd account as a gift, remove your game file and replace with the copy, send car back and tada, you have spent 0 credits on a new car
Gran Turismo 5. Copy your save file, buy an expensive car, send it to your 2nd account as a gift, remove your game file and replace with the copy, send car back and tada, you have spent 0 credits on a new car