Quantity Discount : 33.50% to 40.50% off 5+ @ 33.50% : 158.34 + 7.92 (5%) = 166.26 10+ @ 37% : 150 + 7.50 (5%) = 157.50 15+ @ 40.50% : 141.67 + 7.08 (5%) = 148.75