Do confirm that the seller is using the Global Shipping Program.
If the price is under $100, and the seller uses GSP for shipping, ask the seller, before bidding, if he is willing to ship by USPS First Class Package International which now includes Delivery Confirmation. The words in italics are very important.
If the price is over $100, you are probably better off with the GSP shipping.
It's complicated, but a lot of sellers are being sucked into using the program in a way that was not intended.