New module for X-Cart 5 -
Minimum Order Fee. This module allows admin to set minimum order subtotal and charge a fee if this limit is not met.
Admin can restrict the fee to certain memberships, have (or not) messages to show and explain the fee, show them on cart and/or checkout pages...
Few screenshots
For more detailed description head to the module's official page - https://www.cflsystems.com/minimum-order-fee-for-x-cart-5.html