The environment and duck themed movie posters were really cool, and the idea of running a store is fun. The sound effect for selling the perfect match to a customer confused me a bit, it sounds more like a negative sound to me. I also got unlucky with this bug pictured below, where I was unable to buy an upgrade despite apparently having enough for it. I'm guessing it's floating point comparison funkiness:
It feels a bit odd when you start running out of stock, and therefore are unable to make perfect matches for each customer. Because (as far as I could tell) there's no way to dismiss customers if you don't have what they're looking for, and their requests don't seem to take into account your remaining stock, in the back half of each day most customers get whatever is left, regardless of what they want or how well they tip. I typically held on to high rarity merch until I could maximize the tip, but that led to me running out of lower rarity merch quickly. Maybe playing that way isn't ideal, but if there was some way the player knew about upcoming customers, I think the gameplay would feel more strategic and therefore more satisfying. As is, it's still pretty good for a week!