Sorry to read this thread, I only ship to the USA when I sell and I have never had a potential buyer from any of the territories.
I do not ship outside of USA for one main reason, I use the USPS provided priority mail boxes to ship all my knives. This way I do not need to spend money on packing supplies. A $5.80 small box gets the knife shipped anywhere in the US within 2-3 days with tracking, and buyers like that kind of speed. I figure the $5.80 cost of priority mail into the price I sell the knife at.
If I were to sell outside the USA, I have no idea what the cost would be to ship it via priority mail, and if it was cost prohibitive to ship it priority, I would then have to purchase a separate generic box to ship it in, which also cuts into the price I get at sale. I could factor this into the cost of the knife, but I want a buyer to feel they are getting a good value.
As a result I do not ship outside the USA. Also and especially, on ebay - many nondelivery scams originate from out of country, and I want to avoid those altogether.
For those from the territories such as Guam, Puerto Rico, etc. Do you know if the cost of the small flat rate priority mail box is also $5.80 or is it higher?