Question
Skivvie NIX is a monthly women's underwear subscription service (product weighs about 0.11 lbs with a value of $17USD /mo).
We are currently only set up for delivery in the US however, we have been receiving a lot of interest from the UK, Canada, Australia, and New Zealand.
Our site uses a recurring payment widget which ONLY allows us to sell at a price in which the tax and shipping are already included in the price. That being said, we could either set a price for each country or have a flat shipping rate across the board.
USPS - $12 flat rate (But no tracking number)
Recognized carrier - $25+ (guaranteed to reach destination w/ tracking number)
Answer
Interest in your box subscriptions doesn't mean you should play there. Your margins are too small to pass that cost onto the customer - because they are potentially paying more for the shipping than they are for your subscription box. That's a special set of undies! I would suggest spending more time on setting up a local operation where you can really compete on localized and contextually relevant value creation throughout the supply chain... instead of thinking about how to scale your business outside of the U.S. when on the face of it, there are simply no economies of scale in play at that price point.