Did some more research and I have found that the price for shipping one mug outside of the U.S. will be around 30USD. The weight limit on the cheapest shipping I could use was 4lbs. and each mug plus packaging meets nearly that limit.
Canada will be cheaper though since flight is not required. I'll be sending out emails to whoever hasn't ordered yet and then tally up the final count. This will be another month or so I'd guess. Mostly because I'm busy and lazy on my free time.