For many pairs of countries the price of sending a letter from A->B is less than sending a letter within B. In addition I imagine the labor costs of having people stuff envelopes will a significant source of costs. So you're probably better off picking 3-5 central points with cheap labor and cheap postage, rather than opening dozens of small centers all around the globe
For many pairs of countries the price of sending a letter from A->B is less than sending a letter within B. In addition I imagine the labor costs of having people stuff envelopes will a significant source of costs. So you're probably better off picking 3-5 central points with cheap labor and cheap postage, rather than opening dozens of small centers all around the globe