Nvidia would never price the 1060 below $250. That would create a massive gap between the 1060 and 1070. This graph is just sooooo full of shit it's not even funny.
Someone on Pcper brought up a great point. The GTX 960 had the same problem, but no talked about that: http://www.tomshardware.com/reviews/nvidia-geforce-gtx-960,4038-8.html
If you get one, wait for aftermarket versions. They will have better power delivery (which is really important for the RX 480) and possibly more overclocking potential.