You can learn a lot about society while working at the store.
The staff at the store need to work well together. Poor communication and coordination can lead to many problems.
There are target quantities for key products, and you will often encounter situations where you have to absorb the cost yourself.
The salary structure changes frequently, and there is no overtime pay.
You can think of it as a traditional electronics store. Besides looking after the store and introducing products, you often have to handle repairs and deliveries yourself, because they are all considered part of customer service.