I would love to box my products and have prices calculated based on the box weight and LxBxH. When I add one more of my items to the cart, the USPS rate is multiplied by the number of items in the cart but it will be a lot cheaper if boxed.

In summary, I would love to have the shipping calculated by the weight of the box (containing all items in the cart) and the LxBxH of the box itself.

The box can contain up to 12 items.

Thanks in advance :