It's because US customs sucks. I've had them unpack and repack several things. Sometimes they'll set packages aside and leave them there for a month or longer.
I've seen this sort of comment before and I can't help but find it absurd. If the buyer is willing to meet these extra costs, what's the problem? You're restricting your sales base unnecessarily.
However, it is your sale so sell as you see fit. The only thing that ever stops me selling overseas is if a legal issue forbids it.....
.....and I've let that slip before too, if it's a grey enough area to bend.
