I still can't figure out why someone would pay $800+ for an S7 on eBay when you can get a brand new one from Bitmain for less. When I ordered mine, it took less than a week to arrive here in the U.S. No problems with customs, etc. Very smooth and easy. You could probably do pretty well buying a bunch from Bitmain and turning them around on eBay.
That was exactly my thinking when I purchased my S7 for $1100. I figured people didn't have any btc and didn't know how to buy btc. They were selling on eBay for $1400 when I placed my S7 order but by the time I received it and set it up for testing, the prices had dropped. Like the gold rush of the 1800s, I thought I could make few bucks selling "shovels" to the miners (people who sold shovels, pick axes, sifters etc. made much more than the guys panning for gold. Levi Strauss made a fortune selling sturdy pants made of canvas). I would advise anyone who thinks they could buy new S7s and flip them on eBay to be very, very cautious.