As I understand it, you get a two hour window to try a game and return it if you don't like it. That's barely enough time to configure keybinds in Odyssey, let alone try difference scenarios for performance. I've also read that DLC doesn't work the same way for returns, but I'm a bit uncertain regarding that.I'm fairly sure steam has a decent return policy. Looks like some folks who know the OP got one. I've not needed it for Odyssey, but dont they give you a time period to use whatever you buy, and if you're not satisfied, you can return it? Or does that not apply to Frontier games, since, well, it's Frontier etc? Genuinely wanting to know if thats a thing. If refunds go as normal, it shouldnt be complicated.
Steam's return policy is excellent for situations where you buy a game and it just doesn't run at all. For example, I bought an older game awhile back, and it just plain refused to run on Windows 10, so I returned it and got my refund, no fuss.