Built for scarce stock
Cap how many units one order can take
A spare-parts retailer keeps three or four of every filter on the shelf. That is enough, because each line sells once or twice a week and the reorder cycle is short.
Then a single order takes all eleven units of one slow-moving line. The next four customers see it out of stock, the restock takes three weeks, and every service booking that needed that part gets pushed back.
A cap of 4 per order keeps the shelf usable for everyone. Shopify refuses the fifth unit at checkout, and the message says plainly how many are available per order.
The rule
Maximum 4 per order
- Limit type
- Quantity
- Scope
- Collection: service parts
- Maximum
- 4 units
- How to count
- Each item separately
- Checkout enforcement
- Always on
In the app this is the Maximum quantity quick-start template, already filled in.
Wholesale Green Tea 50g
$12.50 - per unit, 0.5 lb
$87.50 in cart
For bulk orders, please click Contact us
Live demo - this is exactly what your customers see.
- Included
One buyer cannot take a whole line, so stock stays spread across your customers.
- Included
The cap is per order and applies to guests, with no customer account required.
- Included
Add a repurchase limit on the same rule when a second order would undo the cap.
More case studies
Five other stores, five other rules
Every quick-start template in the app has a story behind it. Here are the rest.
Minimum order quantity
A beverage wholesaler stops buyers breaking a case of 6.
Sell in pack multiples
A candle maker makes the box and the order the same thing.
Minimum order value
A B2B food supplier refuses carts that lose money.
Weight limits
A tile store keeps carts inside what the carrier will take.
Limit quantity per customer
A collectibles brand stops resellers coming back for more.
Stop the orders that hurt you.
Unlimited rules - no credit card - 24h support