Holdfast sets minimum order quantities, maximums, case-pack multiples and minimum order values, and enforces them on Shopify's servers at the checkout itself. No JavaScript is added to your theme, so there is nothing for a customer to work around, nothing slowing your storefront, and nothing left behind when you uninstall. A rule can cover one product, a variant, a collection, or anything with a tag, and can apply only to customers with a given tag, so wholesale buyers get their own limits.

• Minimum, maximum and pack-size quantities per product, variant or collection
• Minimum and maximum order value for the whole cart
• Different limits for wholesale customers, by customer tag
• Import and export hundreds of rules as CSV
• No theme code: nothing to slow your store, nothing left after uninstall