OrderGuard: Min & Max Limits

Free minimum, maximum and multiple-of quantity limits and order value limits for Shopify stores, enforced at checkout.

Install OrderGuard from the Shopify App Store, then open it from Apps in your Shopify admin.

Quantity limits. Set a minimum, maximum and multiple-of for products, variants, collections or the whole cart.
Order value limits. Require a minimum order amount, or cap the maximum, in your store currency.
Free, no caps. Unlimited rules and products, with exemptions for tagged customers such as wholesale buyers.