Yep same, I bought it 700€ in 2017, putting 450€ more on a small upgrade, nope.
But yea Valve Index's price must drop a little bit before we should consider buying it, it's clearly not a 1K worth of a upgrade from a Rift CV1.
I guess 2020 won't see any new major VR headset stuff, we will have to wait for 2021 for some kind of Valve Index wireless or something.