A quantity discount lowers the price per unit as a customer buys more. Buy one bottle for $10, or three for $8 each: that drop in unit price is a quantity discount, also called a volume or bulk discount. It is one of the most popular ways to lift average order value, and the data backs that up. Volume and quantity campaigns are the second most common type merchants run on Discounty, with more than 38,000 of them created across roughly 16,000 stores, and every one is built on tiers.
This guide explains what a quantity discount is, how it works, the main types, when to use it, and how to set one up on your Shopify store.
What is a quantity discount?
A quantity discount gives the customer a lower per-unit price when they buy more of a product. The more they buy, the less each one costs. It works on both sides: the shopper feels they are getting a deal, and you move more units in a single order, which raises your average order value. You will also hear it called a volume discount, a bulk discount, or tiered pricing.
How a quantity discount works
At its core, a quantity discount applies price breaks based on how many units a customer buys. A simple tote-bag example:
- 1 to 4 units: $12 each
- 5 to 9 units: $10 each
- 10 or more: $9 each
Buy 10 bags and you pay $90 instead of $120, a $30 saving. The structure is easy for shoppers to understand, which is part of why it converts, and it is why every volume campaign on Discounty is tier-based.
Types of quantity discount
Volume discounts
The unit price drops as the quantity rises: buy 100 mugs, pay $3 each instead of $4. With the volume discount feature you can apply lower unit prices at set quantity thresholds without creating separate product variants.
Tiered discounts
Prices change across quantity ranges: 1 to 4 at $20, 5 to 9 at $18, 10 or more at $15. See tiered discounts for a deeper look.
Step discounts
Each tier is a fixed total price rather than a per-unit rate: 1 coat for $50, 5 for $225, 10 for $400.
Cumulative and non-cumulative
Cumulative discounts add up over time and suit loyalty programs. Non-cumulative discounts apply to each order on its own.
Benefits and drawbacks
Benefits:
- Higher order value and more units per order.
- Faster inventory turnover, useful for seasonal or perishable stock.
- Stronger repeat and wholesale relationships.
Drawbacks:
- Lower margin per unit, so know your break-even before you discount.
- Some shoppers learn to buy only when there is a deal.
- For premium brands, frequent discounts can blur your positioning.
When to use a quantity discount
- Clearing seasonal or aging stock.
- Lifting order value and absorbing shipping cost on larger orders.
- Rewarding loyalty with cumulative wholesale pricing.
- Launching a product, where multi-buys help early traction.
- Wholesale and B2B, where bulk pricing is expected.
How to set up a quantity discount on Shopify
Native Shopify discounts can struggle with tiered pricing without manual edits or code. A dedicated app makes it straightforward: set your quantity thresholds, show a tiered pricing table, and apply the discount automatically at checkout. With tiered quantity discounts you can build "Buy 2, Get 10% Off" and "Buy 3, Get 20% Off" deals in a few clicks, and add sale badges or a countdown timer for urgency.
Best practices
- Know your costs and break-even before setting tiers.
- Base your thresholds on real buying behavior from your sales data.
- Keep the structure simple and use round numbers.
- Show the savings clearly on your product pages.
- Promote it across product pages, email, and retargeting.
- Stack carefully, for example with a free shipping threshold or a limited-time offer.
Quantity discount vs volume discount
The two terms are often used interchangeably. The subtle difference: a quantity discount usually applies to a number of units of one product, while a volume discount can be based on the total units or value across a whole order. In practice, both reward bigger purchases, and you can set up either.
Quantity discount FAQ
What is a quantity discount?
A price reduction offered when a customer buys more units, lowering the per-unit cost as the quantity rises.
What is a cumulative quantity discount?
One that applies as purchases add up over time, rewarding repeat buyers once they reach a total quantity threshold.
How do you calculate a quantity discount?
Divide the total price after the discount by the number of units to get the discounted price per unit. For example, $450 for 100 items is $4.50 each instead of $5.
What is the difference between a quantity discount and a trade discount?
A quantity discount rewards buying more units. A trade discount is a reduction given to certain buyers, such as wholesalers, based on their role rather than order size.
