I am trying to list rc airplane props. There are 12 different sizes of props within the same category (props). My shipping cost for the customer is $3.75 plus $.75 for each additional item.
Example: if a customer adds a 6 x 4 prop at $3.75 and adds another 11 x 7 props the shopping cart is charging $7.50. It should be $4.50.
Each prop is listed separately. Should I list using the drop down window to fix this?
