Next to nothing by the looks of it
>some companies pay you to have their product on your store
That usually only applies to well known chains. They wouldn't pay to shelf products in a small candy shop in the middle of nowhere.
I think I read somewhere that the Japanese government heavily subsidizes rural businesses (both farms and local stores and other stuff like that) to keep them operational and prevent literally everyone from abandoning the countryside
Because of those subsidies and associated export/import duties, rice in Japan costs several times more than rice basically anywhere else in east Asia
Literally every country in the world heavily subsidizes their rural industries. If you can't feed your own people independent of foreign exports, you cease to hold sovereignty. It's also why trade agreements very rarely remove tariffs on primary agricultural products.
Nobody wants to be the next Jamaica.
I was just pointing out that a business that would initially appear to be unsustainably unprofitable probably survives at least in part due to government policy designed to keep rural businesses solvent. I wasn't trying to imply that those subsidies are bad or out of the ordinary.
Reminder that they all died on the flight to Okinawa and keep repeating the same year since Hotaru arrived over and over
That's also why she doesn't need any customers in her shop