Quantity Discount : 24% to 32.01% off 5+ @ 24% : 106.27 + 19.13 (18%) = 125.40 10+ @ 28.01% : 100.67 + 18.12 (18%) = 118.79 15+ @ 32.01% : 95.08 + 17.11 (18%) = 112.19