Singleton | Verify Customers
Verify all registered customers and allow or disallow them to see prices and "add to cart" buttons
This app isn't a direct alternative for fees and surcharges, but its customer verification features could be useful if you need to apply different fees based on customer type (e.g., wholesale vs. retail). You could potentially create custom messages for unapproved customers indicating different pricing structures.
Best for merchants who want to control customer access and tailor messaging based on approval status.