When I do international Kickstarter comics, I try to stick with digital only. It’s probably a bit easier for me as so much is centered in the US with Kickstarter. I don’t think it’s something project owners do intentionally but out of ignorance. It’s one of the bigger hangups for DIY. It still sucks to be stuck with the bill.
I’ve tapered off quite a bit with Kickstarter. I used to check new projects everyday but probably haven’t looked at them in a week. I’ve got a few projects floating out there in likely to never finish land. Those are probably the most disappointing.