Quantity Discount : 24% to 32% off 5+ @ 24% : 1311.97 + 236.15 (18%) = 1548.12 10+ @ 28% : 1242.92 + 223.73 (18%) = 1466.65 15+ @ 32% : 1173.87 + 211.30 (18%) = 1385.17