Quantity Discount : 28.74% to 36.24% off 5+ @ 28.74% : 31.81 + 3.82 (12%) = 35.63 10+ @ 32.50% : 30.13 + 3.62 (12%) = 33.75 15+ @ 36.24% : 28.46 + 3.42 (12%) = 31.88