There was a time when you needed epic resources to take your business to the global level. Even then, there was the problem of reaching out to the global network of buyers to make an impact. The internet marketing syndrome has simplified this domain considerately. Now, being a local business or brand, you can think of taking on a global buyer circle if you have the desire to do so. The bulk of your logistical problems will be resolved by the magic wand of the internet!
Before you think of scaling up your business, you need to evaluate if your business has international potential. A study of the current SEO plan that you are using will reveal the answer to you. Google Analytics or other web tracking tools will tell you how many international visitors you get on your websites and from where they are coming from in terms of geographic locations. Track down the traffic and see the country-wise breakup. Check how consistently they are coming and from which referral sources.
There are some local business domains which are more likely to kindle international interest. For example, if you have a language teaching school, foreigners may be interested in learning from your institute. Similarly, if you deal in local handicrafts or unique items available in your area, you can become hot property on the international scenario. Another business that usually gets takers on foreign shores is traditional restaurants. You might do better business by serving foreign tourists. These businesses, not to mention charitable and voluntary organizations, can find a global network easier than other business domains.
The social media will help you immensely to gauge what the potential of your business is in the global context. You can follow discussion threads and forums that mention what you are selling. For example, if you are a dealer of tribal handicrafts, you can join discussions dealing with such artifacts and find out how many people are willing to buy them from local businesspersons. Another approach would be to create your own page on Facebook and promote it to international forums by tying up with online groups. Once you get the exposure, it becomes easier to judge how much revenue lies for you in the international market.