Ok so I don't have an xbox or a high end graphics card. I have a Ryzen 5 3600 and a GT710.
I want to play MSFS (preferribly in VR). What's the most cost effective way to do that?
I've read that the Series S plus gamepass is the way to go, but can you do VR with that?
No VR on Series S or X, plus it's limited to 16:9 ratio. PC will allow higher ratio if your monitor allows it.
That being said, in non-VR play, Series S will probably look better than your GT710 - that GPU won't be able to handle VR, it might not even be able to handle the game.
MSFS is also available for Gamepass on PC, it's not limited to Xbox Gamepass. Your cheapest way at testing your setup would be to pay for one month of Gamepass PC (~$15) and install the game.