Quantity Discount : 24% to 32% off 5+ @ 24% : 11311.76 + 2036.12 (18%) = 13347.88 10+ @ 28% : 10716.41 + 1928.95 (18%) = 12645.36 15+ @ 32% : 10121.05 + 1821.79 (18%) = 11942.84