Quantity Discount : 29% to 36% off 5+ @ 29% : 1536.10 + 276.50 (18%) = 1812.60 10+ @ 32% : 1455.26 + 261.95 (18%) = 1717.21 15+ @ 36% : 1374.41 + 247.39 (18%) = 1621.80