Upon payment, we will ship you the DD-1 & CC-1. You then have 5 days with the tool and then must contact us with shipping confirmation sending the tool back with the return label provided in the box. Once the DD-1 & CC-1 is received and quality checked to assure that it has not been damaged or is missing parts, we will then send you a refund of $279.98, this is the amount you paid MINUS the $90 dollar rental fee. Should you keep the tool longer than 5 days, an additional $5 a day will be added to the total fee. After 10 days, no refund will be made for the tool.