Quantity Discount : 24% to 32% off 5+ @ 24% : 8773.49 + 1579.23 (18%) = 10352.72 10+ @ 28% : 8311.73 + 1496.11 (18%) = 9807.84 15+ @ 32% : 7849.96 + 1412.99 (18%) = 9262.95