Cute game. As others mentioned the resolution has some issues. I noticed that zooming in lets you see more of the UI, which tells me it was probably made on a laptop with a smaller resolution. Zooming in a lot shows 2 buttons which appear to be unused. An inventory button on the top right and an "upgrade luck" button to the right.
I would also suggest that with text inputs you look into adding RegEx (Regular Expressions) to prevent invalid characters from being input by the player. This is a lot cleaner than just telling the player not to use them. It was particularly an issue with "new line" characters. I, at some point, accidentally pressed enter, which caused a new line element to appear. At first I thought my initial input was deleted, and so I just reinput the offer, but no matter what I was putting as the offer was being rejected, whether it be the same or even substantially higher than the asking price. Came to find out later that it was because of the New Line character.