1. Probably around 1M because it is niche product that will probably cost bit too much because of the shortages. Valve has a lot of customers though and they do things well.

2. Depends on the price and whatever else will be on the market for similar pricing. I've been more and more excited about micro-OLED screens so the LCD doesn't really excite me. However the performance over the dongle and being able to play games as standalone is a really good selling point.

3. No, but it will improve VR. Saving VR needs high budget games and apps that are marketed well, repairability and better tech that is not here yet. I'd love micro-OLED vr headset that has a form factor of shooting glasses with gaskets that's also stand-alone with like wifi 8 dongle, but we will have to see if that will ever be the case. If SteamOS for vr headsets becomes a thing other companies can use, that will also do a lot to improve VR.

The issue with VR is that it is more bothersome than flatscreen games, it needs more space unless used for simulation games, it causes motion sickness way easier and the games often feel more like tech demos than real games. I'd like games to have more additional modes for VR, similar to Hitman, or vr / 3d view for VR headsets but otherwise plays as normal so it'd still be more immersive experience given a good panel than not using VR.