I finally finished Horizon this weekend and I have to say that I quite enjoyed it! With all the people talking about it being a tech demo more than a game, I was expecting it to be very short, very limited and with no sense of progression. But in the end I got a 10 hour game that pushes every new feature of the headset, some extremely impressive set pieces, top notch immersion, stellar production values for a VR game, and a gameplay that consistently evolves while perfectly respecting the IP. Oh and the musics are absolutely fantastic!
I agree that the price is too high if you don't purchase the bundle (70 euros here), but really it's a great game if you have the headset!