Quantity Discount : 28.75% to 36.25% off 5+ @ 28.75% : 845.34 + 152.16 (18%) = 997.50 10+ @ 32.50% : 800.85 + 144.15 (18%) = 945 15+ @ 36.25% : 756.36 + 136.14 (18%) = 892.50