Hey everyone I have a shipping question.

Say I have two items, a and b, and it's as follows:

A costs 7 dollars, shipping is 2.75 and 1.50 for each additional.
B costs 10 dollars, shipping is 3.00 and 2.00 for each additional.

How do I set it so that when A and B are purchased together, it charges the higher "first item amount" and then adds on the additional shipping cost for the second item?

A+B+shipping = 7+10+ 3(higher first item) + 1.50 (additional item price for A) = 21.50

Thanks in advance!