What does it do:
This contrib adds multiple limit verification checks during the checkout step.
Allows multiple MIN and MAX limits. If any of the limit checks are not met or exceed, a warning is shown on the cart page
The customer cannot continue until the min/max rules are met.
Checks can be enabled at a "per customer group" level and can trigger based on total, qty, or weight

• Verify Cart Total (or Subtotal) meets the Minimum Required Total
• Verify Cart Total (or Subtotal) does not exceed the Maximum Allowed Total
• Verify Cart Item Count meets the Minimum Required Item Count
• Verify Cart Item Count does not exceed the Maximum Allowed Item Count
• Verify Cart Weight meets the Minimum Required Weight
• Verify Cart Weight does not exceed the Maximum Allowed Weight
• Customized informative error message based on the error scenario
• Warning message on checkout/cart page prevents checkout and alerts customer of resolution
• Individual Settings per Customer Group
• Works with most themes out of the box and can be altered to add support for new ones
• Works with most checkout systems and can be altered to add support for new ones