Hi - I am really sorry for the confusion.
I wanted to be able to get time to work on more animations for it, and adding new sprites (like the combat animations). And for that, I made it $1 to make it a bit financially sustainable.
I honestly thought that it would still be downloadable for free for people who downloaded it before it was set to $1, sorry about that. If you could send me your email, I can send you the update as you downloaded it while it was free.