Quantity Discount : 24% to 32% off 5+ @ 24% : 4822.78 + 868.10 (18%) = 5690.88 10+ @ 28% : 4568.95 + 822.41 (18%) = 5391.36 15+ @ 32% : 4315.12 + 776.72 (18%) = 5091.84