Quantity Discount : 33.51% to 40.50% off 5+ @ 33.51% : 50.66 + 2.53 (5%) = 53.19 10+ @ 37% : 48 + 2.40 (5%) = 50.40 15+ @ 40.50% : 45.33 + 2.27 (5%) = 47.60