Quantity Discount : 23.99% to 32% off 5+ @ 23.99% : 51.53 + 9.28 (18%) = 60.81 10+ @ 27.99% : 48.82 + 8.79 (18%) = 57.61 15+ @ 32% : 46.10 + 8.30 (18%) = 54.40