I do my best to stock parts with as much local (US) content as possible. That tends to provide you with the best quality components and support and also indirectly funds local lobs for you and your kids.
On the other hand, we all have budgets and sometimes drool over those direct from China prices. In order to satisfy that need, I am starting to build up an economy imports section. I can't quite match those direct prices, but I will screen out the least reliable suppliers and provide my normal fast shipping from South San Francisco.
What parts should I stock first?