Why percental
The insurance should grow with the value of the goods. A percentage does exactly that, and the tax is split across the cart's tax rates automatically.
The example from the store description: if certain products are in the cart, the delivery goes to Austria or Switzerland and a retailer orders, 10% transport insurance is added. It is mandatory and cannot be removed.
On the left the rule in the Rule Builder, on the right the item's fields that matter. Everything else stays as it is when you create the item.
RuleRule Builder
Transport insurance +10%
10% of €495.95 is €49.60. With two pieces it is €99.19, with three €148.79, as measured in the demo shop, where the same item runs with an always-valid rule.
Cart2 items
Please note that we have automatically added transport insurance to your shopping basket!
Subtotal€545.55
The insurance should grow with the value of the goods. A percentage does exactly that, and the tax is split across the cart's tax rates automatically.
A percentage surcharge is calculated on everything that is in the cart before it. At position 1 those are only the products, no other surcharges.
The product note says it before the purchase; the cart note confirms it once per session. The texts above are those from the demo shop.
What to watch out for: Once none of the three products is left in the cart, the rule no longer applies, and the insurance disappears automatically at the next recalculation.
If product A, B or C is in the cart, the delivery goes to Austria or Switzerland and the customer is a retailer.
For deliveries to certain countries the shop pays part of the shipping costs.
A discount for payment in advance, a fee for cash on delivery: one item per payment method.
A surcharge per bulky product when delivery is by freight.
A real product from the catalogue that retailers get once, with their first order.
Once the goods total reaches €50.00, a catalogue product is added free of charge.
A magazine or a sample that the customer can see and remove.
In Advent, one gift wrap per product in the cart, which the customer can remove.