MinMax Purchase Rules for WooCommerce helps store owners control how customers purchase products without installing a complex pricing or wholesale plugin.

The plugin lets you set simple and practical purchase rules for products, categories, the whole cart and order amount limits. It is built for real WooCommerce stores that need reliable minimum quantity, maximum quantity and step quantity validation at cart and checkout.

Use it to require products to be purchased in packs, set wholesale category minimums, prevent unusually large cart quantities, or enforce minimum and maximum order amounts.

Main features:
- Product minimum, maximum and step quantity rules
- Category minimum, maximum and step quantity rules
- Cart total quantity limits
- Minimum and maximum order amount rules
- Editable error messages
- Rules overview for store administrators
- Classic Cart and Checkout validation
- Block Cart and Checkout validation
- HPOS compatible
- No license key or external activation server

The plugin focuses on stability and practical purchase validation. It does not change prices, add discounts or replace WooCommerce stock handling. All purchase restrictions are validated server-side, so customers cannot bypass the rules by changing the browser UI.

Typical use cases:
- Require a product to be purchased in packs of 6 or 12
- Set a minimum quantity for wholesale categories
- Prevent a product from being purchased above a set quantity
- Require a minimum cart quantity before checkout
- Block orders below or above a specific order amount
- Show clear customer-facing validation messages

Admin screens are available under:
WooCommerce > MinMax Rules

Product-level rules are available on the WooCommerce product edit screen.
Category-level rules are available on the WooCommerce product category edit screen.

Tested with:
- WordPress 7.0
- WooCommerce 10.0.0
- WooCommerce 10.8.1
- PHP 7.4.33
- PHP 8.3.31
- Classic Cart / Checkout
- Block Cart / Checkout
- HPOS ON / OFF

Author:
SG Group

Support:
https://sggroup.jp/contact/

Codester profile:
https://www.codester.com/SGGro...

Product minimum, maximum and step quantity rules
Category minimum, maximum and step quantity rules
Cart total minimum, maximum and step quantity rules
Minimum and maximum order amount rules
Editable customer-facing error messages
Rules overview screen for store administrators
Server-side cart and checkout validation
Classic Cart and Classic Checkout support
Block Cart and Block Checkout support
WooCommerce HPOS compatible
Variable products inherit parent product rules
No external activation server
No telemetry or tracking
No complex pricing or discount logic

WordPress 7.0 or higher
WooCommerce 10.0 or higher
PHP 7.4 or higher
WooCommerce must be installed and active
Administrator access to configure product, category and global rules

1. Download the package from Codester.
2. Unzip the downloaded package on your computer.
3. Open the installable-plugin folder.
4. Find minmax-purchase-rules-for-woocommerce.zip.
5. In your WordPress admin, go to Plugins > Add New > Upload Plugin.
6. Upload minmax-purchase-rules-for-woocommerce.zip.
7. Click Install Now.
8. Activate the plugin.
9. Make sure WooCommerce is installed and active.
10. Go to WooCommerce > MinMax Rules.
11. Configure global cart quantity rules or order amount rules if needed.
12. To set product rules, edit a WooCommerce product and open the MinMax Rules section.
13. To set category rules, edit a WooCommerce product category and configure the MinMax fields.
14. Test your cart and checkout before using the rules on a live store.

Important:
The plugin validates rules server-side at cart and checkout. It does not automatically change quantities, remove products, change prices or apply discounts.