Many retailers are looking to establish an international e-commerce presence, whether sourcing goods from abroad or selling goods in a new country. Research from Pitney Bowes found that an impressive two-thirds of consumers have made an international purchase, and almost a third do so once a month or more. DHL has predicted a 25 percent increase in cross-border retail volumes between 2015 and 2020, amounting to a hefty $900 billion market.

It’s natural for retailers to try to cut out a piece of this pie, but my experience at eBay and Tophatter has taught me that it typically requires a substantial investment. Establishing cross-border trade takes trial and error — getting it right almost always requires making lots of mistakes along the way...