Add item without increasing quantity
My client's shipping is tied to overall quantity - for 1 to 4 items, it's $8 and change, for 5 to 6, it $9+, and so on. However, she has 3 products (gift boxes) for which she includes shipping. If people order regular items and gift boxes, she wants to charge shipping for the number of regular items, but leave the gift boxes out. In other words, gift boxes should not increase the quantity.
I've got the rules down pat for the first part, but don't know how to tackle the gift box no-charge shipping. Any ideas on how to approach this?
TIA - Joe