Or can I watch it on youtube and save 30 bucks?

Totally worth it. Wear headphones.

REally!? You’d choose to watch a game on YouTube rather than actually play it?
But anyways, it’s definitely worth it’s small price tag. One of my favourite games this year.

Youtube seems fine for this. So far I haven't heard anything amazing about the gameplay in this game.

they say it's very linear. like a straight line linear.

It's not for everyone. I loved it.
You'll be missing out on "the experience", though.

You need that feeling of being out of control, the sense of madness ("did I just see what I think I saw?"), those crazy voices in your ear, and the tension of knowing that your game will delete itself if you lose a couple more battles.

If it's not your type of game, feel free to watch it. It lacks replayability and you spend a lot of your time just walking and looking. If it IS your type of game, you won't regret buying it.

I grabbed it for $23 a few weeks back and its good, i'd say worth the money. I would say owning over the ear headphones for it is a must (though not required). 

Very fun combat but not a lot of it until the end. I hated some of the puzzles, personally.

I played through the whole thing on twitch if you want to watch it. Whole game took about 7 hours to finish.

Vids of the playthroughs:

https://www.twitch.tv/videos/209721658

https://www.twitch.tv/videos/210590981

Definitely not. You'd lose a lot of the weight, and therefore a lot of what makes the game special, by just watching a play through.

Or you get the benefit of not being terribly annoyed by all the stuff that's going on and have an enjoyable experience because of it. Some people just want to enjoy and not suffer.

I quit after the second boss, it's quite boring and the puzzles are tedious. Not a game for me.