Other tips:
1. Payment: ask for cash in advance payment for 1st time customer.
If a customer make a "unsual" large order, ask for cash payment in advance.
There are many case involving frauds, stolen credit cards, western union, etc.
2. In several countries there are foreign currency restriction, rapid exchange rate movement.
3. Shipment: because of custom problems, it is almost impossible to ship goods directly to several countries. It's better to use transhipment / smuggler.
4. Local post service in several countries are unreliable. Many valuable items are missing from international packages. It's better to use courier service.
