Tried it on Steam!
Quite a fun experience in my opinion, but there few minor issues.
First, the color scheme is soft and visually appealing, but it makes a lot of the UI blend together, which makes hard to tell what's important/relevant. Consider adding something to help separate the foreground from the background.
If you have 10 Scrolls, you cannot sell the bottom one because the button is so low that it's off the screen.
Also, if you have at least 3 runes, it starts removing them from the shop.
All in all, a joy to play! Looking forward to seeing where you go with it.