this reminds me of E3 2013, the launch of the new gen consoles, microsoft screwed up so much that PS4 became more and more the evident choice.
i think the same will happen here, with Vive and oculus, i strongly think Vive will be way cheaper, because when you look at the mats used on both headsets, Vive is the practical one, quality materials used for the vital part, and saved money on the rest, focused on features for better gaming experience, and i get why because Valve wins on all sides, they can even sell it at a loss and still get out winning, because it benefits their Steam platform, get laverage to push a New API, help spread SteamOS, and they still get a cut from software sales, and tighten their grip on PC gaming even more.
oculus, went all in with super expensive material, for ergonomy and comfort, going more like home cinema accessory, or social media novelty, focused on entertainement experience, they have very little to win following gaming, and bigger profit from other applications.
will be interesting to see which one will pay off more, and i would bet that Valve will announce their price couple weeks before the shipping starts for oculus, and the price will be lower and under 500.