I cancelled by renewal, I'll still have access until the end of October which is also when the prices go up.
Mind you it isn't the price specifically that made me cancel, I've just ran out of games I'm interested in on game pass. I played through Shadows of War, RE7, Yakuza 0, Halo 1 - 3, and several indie games, so I absolutely got my money's worth for the 2-3 months I've been subscribed. I expect I'll do the same sort of thing I do with Netflix, resub for a month once or twice a year when there's a build up of games I'm interested in playing.
The platform was a little buggy at times in various respects, there was a week long period where I couldn't play Shadows of War due to an error not related to my own setup and I had some problems with saves being deleted for other games which was unfortunate. That said I bought into it knowing it was still in beta so I can't complain too much. All in all it's something I'd recommend, extremely good value for most people I imagine, and that's only looking to improve in the future.