There are several items in the shop that have automatic volume discounts so if you are purchasing several items you get a small discount. If a product has a volume discount, you will see a chart on the product listing that shows how many you need to purchase and what the discount is. Also if you are close to getting the discount you will see a notification in your cart that says for example "add one more to get __% discount" and you can add it right there. Most of the volume discounts include a category so for example, stationery. This means any of the items in that category count towards the volume discount. ImportantThe application I use to create this discount has a few limitations. Once you are in your cart and achieved a volume discount you will see the discount. From your cart, make sure to ONLY choose the CHECK OUT option. There are express payment method options there and if you do choose those, the discount will go away. Once you choose check out you will be taken to the check out screen and see the discount is still there. Choose a payment option and check out as usual! While you can stack multiple volume discount types, you can't use an automatic volume discount AND a discount code because shopify only allows one.