I had to chime in on this one. The Global Shipping Program is one of the worst and immoral scams ever concocted to screw people out of money. eBay "sells" the program to sellers in the UK and USA as a convenient way to ship goods internationally but it is nothing but a way to rip off buyers of their hard earned cash.
As a Canadian, the GSP collects customs duties up-front that I am required to pay by law when importing goods to the country....one problem though; Canada's Customs and Boarder Services Agency (or jack-booted-commie-tax-collecting-pigs as I like to call them), will not charge ANYTHING, zilch, nothing, nadda, on imported goods valued under $100. However, when using the GSP Pitney Bowes collects "customs, duties, and fees" on everything no matter the value in the name of the Canadian government; BUT my own government would not collect the same. Wonder what happens to that money? To make it even worse, when these customs/duties/fees are legitimately due, Pitney Bowes collects an average of 300% MORE $$$ than what my government would actually charge me.
I refuse to buy anything that ships using the GPS because it is a complete an utter rip-off! 9 times out of 10 I find UK and USA sellers will ship to me directly after I explain why I can not, and will not, buy anything using the "program". However there remains some people, some very lazy people, who refuse spend the 30 seconds it takes at the post office to fill out a customs declaration sticker, and will only use the GSP.
All I can say is PLEASE DO NOT USE IT!!!