Upload & Sell: Off
Ask people here or other forums for recommended shops in Asia. Stay away from street vendors. We all know a pro-level shop when we see one. Lots of glass and cameras, professional people, clean, etc. They may be able to make one or two fakes but can a shop fake an entire Canon and Nikon line?
Would I buy a lot of stuff in another country? Maybe not. The US dollar is weak. Also, look into how the warranties will be affected if something needs repair in the US. If something goes wrong will you have a chance to take it back to the store in a day or week or will you be constantly moving? Test everything out thoroughly in the shop. Bottom line, how much cheaper is it really going to be vs your own peace of mind. A 5D for $1000, great go for it if it checks out ok. 5D for $1800, I'd just buy it here for a couple hundred more and for the warranty.