US News and World Report has some tips for small businesses looking to sell overseas. One tip I think is very important is to "budget for the barriers". Quote from the article:
"...one of the most common mistakes businesses make is getting into a foreign market too quickly before working around all the rules and regulations...recommends that small businesses plan to set aside 5 percent of their expected revenue to pay for these costs."
While exporting has gotten a lot easier and cheaper over the last decade, it is not free. There are still rules, regulations and expenses associated with exporting. Small businesses need to be aware of these.
These tips are a sidebar to their "Small Businesses Go Global" article.