Quantity Discount : 24% to 32% off 5+ @ 24% : 1407.93 + 253.43 (18%) = 1661.36 10+ @ 28% : 1333.83 + 240.09 (18%) = 1573.92 15+ @ 32% : 1259.73 + 226.75 (18%) = 1486.48