I'm glad that you enjoyed the game, and thanks for your feedback. We'll have to disagree about the price - I've spent over two years working on it, and I think $10 is a fair price for the game. But, as you say, there are great games out there that cost less, either by being free-to-play games or just by being cheaper. If you'd rather buy and play those games, that's totally fine ^.^
The full version of the game (for sale on Steam) does have a lot more content in the game, especially for the mountain trail. This version here on itch is the same version that started off as the Early Access version in Steam, and there have been four major updates since then. Cheers!