What? Slimes can't do magic?! Did this slime just fool the buyers? xD I liked the humour at the start. Quite a simple topic to understand. I liked it. Originally I too thought why this isn't being enchanted, so maybe a text to indicate that we have to wait for certain time would be good. Also you could add a few fellow slimes coming to the shop and buying stuff so that there's a time limitation for us to craft whatever they need before they get angry and leave and we lose points. I liked the art. Great job!