Quantity Discount : 24% to 32% off 5+ @ 24% : 6440.68 + 1159.32 (18%) = 7600 10+ @ 28% : 6101.69 + 1098.30 (18%) = 7199.99 15+ @ 32% : 5762.71 + 1037.29 (18%) = 6800