I bought the game + OST on GOG for $60, it's kind of pricey for a game but developers deserve it. Not only it's a good RPG with beautiful art and interesting story with tons of writing, it's also a crowdfunded project. And the game was released DRM-free with Linux version on day one. I don't mind paying that much since it has a lot of value. In other cases I might consider it too high and wait for later sales (like Divinity: Original Sin which still didn't release the Linux version until now).