As people already said the only way they can make a hit out of it if it's cheap, graphics doesn't matter as Wii taught, even if this time people will need to own a PS4. Knowing that PS4 won't go under 300/250$ in a loooooong time I really can't see Sony's VR sell a lot, that said it seems that the Oculus needs a 1000$ specs PC to give a proper experience so who knows...
Imho the best price they could realistically make would be 299 but I think it will be higher