I'm trying to add a rule that add a fixed shipping cost for the first product in cart and a half shipping cost for each additional product.
For example:
- ProductA price = 10€
- ProductB price = 15€
- Shipping cost for each product = 5€
If the shopping cart contains, total price will be:
- ProductA only --> 10€ + 5€ (product price + shipping cost)
- 2 x ProductA --> 10€ + 10€ + 5€ + 2.5€ (product prices + shipping costs)
- ProductA + ProductB --> 10€+15€ + 5€+2.5€ (product prices + shipping costs)
and so on...