
I mean... Maybe you'll really like it and now you get to keep it?
There are downsides such as Amazon rotating the games in and out each month, so there's a chance it will leave before you get to finish it.
It's also the first time I've properly tried Luna and though it's been flawless so far and I think it looks great, I don't know how the game compares to running it natively.
You get very little control over the visual quality, and you are at the mercy of your internet connection compared to owning it.
So if any of that is a consideration then maybe it was worth the cost?