I don’t think the controller will impact the price too much. Both standard current controllers are the same price and the ps4 controller has touchpad, light bar, and a speaker.
Going by the price of the one x on release at $499 I can see them both being around that price. Sony did keep the pro cheaper at $399 so they seem mindful of price, maybe they go $449. I’m not an expert on build price so just going off of what has happened before.