Quantity Discount : 24% to 32% off 5+ @ 24% : 9539.29 + 1717.07 (18%) = 11256.36 10+ @ 28% : 9037.22 + 1626.70 (18%) = 10663.92 15+ @ 32% : 8535.16 + 1536.33 (18%) = 10071.49