While I see where it's awesome from the seller's perspective, the GSP is absolute trash from the buyer's perspective, to the point that I actively avoid any listing that uses it. I'm also far from the only one, so if you're making a ton of sales internationally, think of how many more you'd be making if you took care of it yourself. In the 15 or so years I've been buying/selling/trading online, I can count on one hand with fingers left over the number of issues I've had with the postal service, and only a couple more times where I had any sort of issue at all. Based on my personal experiences, I feel the "risks" are massively overblown. Especially when every problem I've ever had came from the US...