Who knew refilling shelves could be so stressful and yet so fun at the same time? Really cool game concept, the gameplay is simple but quite engaging, I love how you can see what item the customer is picking, this gives you the time to plan ahead on the restocking stage, that's a great piece of gameplay right there.
Although the art is quite simple, you managed to make each item distinguishable from one another, which is very important considering the core gameplay involves you putting item in the right place.
The music choice is also great, it sounds like a music that would play in a convenient store, overall great job on this!