I'm currently working with Bigcartel, and would like to migrate to something less expensive. However, one nice thing about Bigcartel is that they offer a separate shipping fee for combined items. So a book might ship for $4 individually, but only adds $2 to the total ship cost when put in a box with other stuff.

Is there anything like this for Market Theme? I looked around at the dashboard and saw shipping discounts for multiples of the same item, but I couldn't find anything that has a combined shipping cost section.