Hi Kigaro,
I played your game for two days, trying to beat it. I understood enough what I had to do, albeit I discovered new things along the way.
I like the visuals and especially the stray cat, the fair and the "Martinszug"
But in the end I didn't enjoy it anymore, mainly because the KI-guy I hired for purchasing wasn't very intelligent and I ended up making expensive emergency buys myself all the time because he had bought the wrong items and I wouldn't have enough to sell of some item. This was even after I bought the last storage extension. Why does stuff that isn't delivered yet take up storage space? When I bought mostly the stuff to be delivered in 3 days, I ended up with an empty storage and couldn't order more stuff at the same time, because I had deliveries scheduled each day.
I would suggest to close the window automatically when the player has clicked "start day"
Very annoying once you have more than 5 products to buy and can't see them on the screen anymore: When you scroll down using the mouse wheel, the quantity of the item is reduced, but you don't get down to the next item
I made a far simpler "shop-game" myself - https://smurjo.itch.io/s-caf-am-markt - maybe you have a suggestion what I could add to it?