We have built-in bulk pricing on our website that will automatically apply a discount at checkout when you have 10 or more products in your cart. The discount goes up as the quantity goes up. It does not matter if they are all the same product or are different products.
Here is the breakdown:
10-24 units = 15% off
25-49 units = 20% off
50-99 units = 25% off
100-249 units = 30% off
250-499 units = 35% off
500-749 units = 40% off
750-999 units = 45% off
1k-4,999 units = 50% off
5k-9,999 units = 55% off
10k+ units = 60% off