Quantity Discount : 29% to 36% off 5+ @ 29% : 1206.02 + 217.08 (18%) = 1423.10 10+ @ 33% : 1142.54 + 205.66 (18%) = 1348.20 15+ @ 36% : 1079.07 + 194.23 (18%) = 1273.30