My laptop lets me connect my $100 external portable monitor to my computer via usb-c. I can't fold it in crazy ways like this but I have an IPS panel and dual monitors and it only cost me $100. And when I don't need to have dual monitors I just put the second one in my bag, or leave it home.
This one[1] is more expensive, but it's 4k, 17" and usb-c. I use it daily with my MBP 16" and it matches the PPI pretty well.
And I recommend to pair it with this.[2]
