None of the US based shipping extensions take into account the value of the items in the order.
We never ship anything without full insurance so I am going to be charged $1 for every $100 in value by FedEx for example. The FedEx shipping extension only quotes the shipping cost and does not add in the cost of the insurance. On a $1000 item I will lose $10 on every shipment this way.
How can I add the insurance value to the shipping fee or if that won't work, as a separate charge at checkout based on the tota value of the order at 1%?
I don't want to add this price into the product price myself - I want it added at checkout with the description that it is shipping insurance.