NVIDIA released full pricing table for GeForce GTX 1060 graphics card.
GTX 1060: 10 EUR more than RX 480
I think the most interesting price is for Euro-Zone countries. The MSRP for GTX 1060 Founders Edition is 319 EUR, while MSRP for custom cards is 279 EUR. For comparison RX 480 price in Euro-zone is 10 EUR lower (269 EUR).
GTX 1060 3GB?
What this table does not say is the price of 3GB model. You probably didn’t hear too much about it yet, but I can tell you that this model should be available mid-August (~3 weeks after 1060 6GB goes official), and it should probably be even cheaper than 6GB version.
I can also tell you that NVIDIA already has another card in the making, which is GTX 1050.