I also can't see 4K gaming happening on the PS4, so supporting that resolution seems unlikely. I can't see it being cheaper than the Rift, but if the overall experience is better then the premium is worth it.
People won't be able to enjoy if it's so expensive that they can't afford it because most of us don't have expandable incomes to that extent to p*ss away thousands of dollars into a burning barrel in a sitting.
It be awesome if sony incorperated this type of Haptic technology their dualshock controller...
Cheers Gamers & Happy Gaming!