Way over 1000$ if you include Controller, 4K Blu Ray, HDMI etc.
But you cant build a PC Scorpio, it is impossible, Microsoft made their own GPU just like back on Xbox 360, they use AMD tech but they pretty much customize it to take full advantage of the box, so it a a GPU that it will never exist on the Pc market, not even in 50 years because it was built for a closed architecture, just like Ps4 Pro GPU but in this case the Pro is closer to its Pc counterpart with many customization from Sony like CB etc.
Xbox One a PS4 were more conservative on this regard because Sony and MS though Console gaming was dead and they didn´t want to bleed money so they went with 2011 tech, full profit, now they know console gaming is bigger than ever and they are selling great so they are willing to take risks again, expect a pretty beast Ps5 and Xbox Two, in line with Ps3 and 360 back in the day.