I sold an item on ebay to a lady in VI. I know the abbreviation for Virgina is VA, but I guess I had an early senior moment. VI is the Virgin Islands and is a part of the USofA but the shipping rates are not the same, shipping cost almost as much as I got for the item.
Is Alaska not on the North American continent? Did it slide away when I wasn't looking? Last I looked, it was part of the continent, which would make it part of continental US. Perhaps what you meant was "shipped to the lower 48", or even "shipped to the contiguous US states".
I have had many great dealings with Trapshooters sellers in the lower 48 and I have always offered to pay any additional charges for US Postal Service priority mail shipping up here. It is usually not a huge difference -- I wouldn't think of of using UPS Fedex or parcel post -- John