I don't know. I guess all it means is that Matches is willing to take a fat loss (on sales items anyway) if it builds them a stellar service reputation. Or maybe they're only offering it for a while to break into the American market and plan to change their policy later.
Just ftr, I didn't skip this to make things sound worse than they are but because I doubt this route would get me anywhere. But maybe I'll look into it, who knows.
You'd have to return the item to the USA to get the taxes back, and you're not planning on doing this. I still believe the easiest solution for items pruchased at discount is to put them on eBay.