Your competitive advantage is that you can deliver the same product within a more predictable window. Getting something from China by surface can take 7 days to

Your competitive advantage is that you can deliver the same product within a more predictable window. Getting something from China by surface can take 7 days to 8 weeks. If you use USPS service domestically, you get quasi-tracking with a shorter delivery window of 1 to 3 days (usually).