How can I add an extra fee to the cart?
There is item price, and shipping cost. I need to add assembly rates for some items in the cart.
Ideally an item in the cart would look something like this:
Product name $100
And later in the totals:
Shipping & Handling $10
Sales Tax (8.625%): $8.63
Order Total: $138.63
Assembly is not included in sales tax.