There is book called "The Design of Everyday Things" that discusses such things. https://www.amazon.com/Design-Everyday-Things-Donald-Norman/dp/145265412 https:

There is book called "The Design of Everyday Things" that discusses such things. https://www.amazon.com/Design-Everyday-Things-Donald-Norman/dp/145265412 https://www.amazon.com/Design-Everyday-Things-Donald-Norman/... I don't even know if it is a cheap product thing as many of the cheap products are very usable. For example, light switches are very cheap. People place them in strange places or in strange orders and it makes them hard to use.