As others have said, it takes a little bit to get the hang of. But once you know the price of everything, you can streamline the process and make a huge mess! I had a ton of fun playing, the music and artwork are fantastic! The one thing I would say is that the controls feel all over the place. Space to pick up/drop an item, WASD to move, mouse to aim and fire, e to buy things, p for... lemonade, etc. Looking back, I guess there aren't too many different controls, but in the moment and in a rush, it feels like a lot more.
Good job with this one, keep up the good work!