I was also just looking for a way to increase the shipping charges to cover insurance, especially for international shipments. Etsy used to have the ability to set up a handling fee in the package preferences area and I used that to cover the cost of the packaging materials but I just found out that was removed on March 3rd of this year. So for the past 4 months I haven't had any compensation for the cost of packaging. Why was that feature removed? There really should be some way to add extra shipping charges for each shipping option per lb or per $ on the invoice to cover shipping charges. It seems to me that what you are trying to do there is to force the sellers to include those costs in the price of their items instead of the shipping charges. That way you can take a commission on those costs. That is really kind of sleezy.