You do not need a PC to play games. Therefore "no PC". But if you want to play more graphics-intensive games, you can use a USB-C cable to connect it to your PC and play.
Have fun!
Unfortunately, we can't say in advance, because enough are ordered at any one time, the only question is how much the respective supplier can offer for the release. As soon as we have more information, we will be happy to provide it here.
Since you can also connect the glasses to the PC, this would be possible. But this is never tracked. But these are the wrong glasses for your needs anyway. The HP Reverb G2 will be released in September. They would probably be better suited to your project. Sebastian from MRTV has a lot to say about this on his YouTube channel.
You cannot load your Rift apps directly onto the Quest, as they must be optimised for the Quest. So you have to get them from the Quest Store. Now Cross-Buy comes into play: Apps that you have bought in the Rift Store and that support Cross-Buy are automatically 'bought' in the Quest Store.
Whether Cross-Buy is supported or not, by the way, is not decided by Oculus, but by the developers, and quite a few say that you should pay again precisely because of the additional effort involved.... (Beat Saber, Superhot, Arizona Sunshine...)
Here's a list of apps that support cross-buy (don't know if that's all of them or just like there's a selection):
https://www.oculus.com/experience...
Some games in the Oculus Store have a cross-play function. This means that you only buy one version of the game, but you can play it on the Rift as well as mobile on the Quest.
Via Oculus Link, the Quest works as a Rift and can play all Rift games (as well as all SteamVR games).
You can see whether a game has crossplay in the store.
Whether a game offers crossplay is up to the game manufacturer.
Oculus Link, which allows the Quest to be used as a PC headset, is not yet available, but should be out in November. There will certainly be some sacrifices, as less data comes in via a USB cable than via USB and HDMI cables, but it sounds pretty cool. I would suggest waiting until November and then reading reviews. Ideally, the Quest + Link will deliver a more or less equivalent experience to a Rift S.
Otherwise there's the Index, which relies on external sensors but has a lot more to offer graphically. You also need a damn fast PC for that.
Unlike the Rift (S), the Oculus Quest (like the Go) is a stand-alone solution. This means that all hardware is integrated into the glasses - with all its advantages and disadvantages. For the list of launch titles, just use Google, many games known from the Rift will be adapted.
you asked the question in a very whiny way, but basically you're right. dynamic prices are extremely cumbersome, I think they should be banned. consumer protection and all that.