My aim is to neither make nor lose money on shipping.
The shipping fee is passed through exactly as charged to me by UPS. This is a distance/weight formula and cheaper if they are delivering to a business than a residence. You can find the general amount yourself if you want by entering in your zip code and mine of 05101 (Vermont) at the UPS fee calculator page (close that window to return here). I will approximate your shipping by using that page and if the actual weight is less and there is an overcharge I will refund it with a check enclosed in the package. If the weight is more I will eat it.
I ship insured. I have a very good record with UPS. Damage is very rare except between Thanksgiving and Christmas, and unlikely even then. Always be sure to check your delivery promptly and if there is any damage save the packing material and notify UPS on your end right away.
My packing fee is based on the size package needs to be which depends on shape and size of piece. Platters and bowls take more space than pitchers/vases as they are more vulnerable. Minimum packing fee is $4 for a single piece. It can be as much as $20 for a large piece. The total pack&ship will not be more than 10% except on one small item.