The only way to get great phone prices is to buy direct from a hand full of companies / you can only get these deals if you own a buisness and have good credit, not to mention over $10,000 of purchases per month , there are some exception ,if you talk to the right rep at a company, New dealer Rep's can help you out.
**Stop chasing deals online from china** Your playing with fire.
Best case is that you make a few buck for dinner / not worth the time.
Most good local deals are found here in the USA.
Please realize that to resell phone's you need tall Cash/Credit or its just not worth it. I can lead you in the right direction if anyone needs help.
I buy and sell phones everyday mostly in the B2B channel.
I run multiple wireless retail store in Chicago.
I know both sides.