Kotaro-sama
This is Kawaguchi Hidetoshi. This is my humble answer to the question.
Temples are different from ordinary corporations and private stores, so I know that even if they do business, a little bit of knowledge is necessary.
Among the many things, I think what is particularly important is the feeling of gratitude for “being involved with the Buddha.”
Since ancient times, temples (shrines, preachers) and groups of monks (sangas) have been formed by devotees.
For example, in the time of Shakyamuni, Gion Seisha and Chikurin Seisha were famous, and land and buildings were built with donations from believers, and Shakyamuni and his disciples were able to perform sermons, ascetic practices, and missionary activities with support from countless believers.
In particular, I think it can be said that believers were actively engaged in offering gifts from the viewpoint of being able to accumulate good deeds, in other words, to accumulate merits by being taught precious Buddhism and being involved with the Buddha.
Even now, temples have gatherings of parishioners and believers, which can be called “lectures,” or “service groups,” and there are many places that help with memorial services and events, clean buildings and grounds, prune trees, and perform various maintenance, etc.
Among them, for example, if there is a tatami shop among the parishioners and believers, they replace tatami mats, if there is an electronics shop, they change light bulbs, and I think that is the case even now, if there is a watch shop, they replace sliding doors and shoji. Of course, you will pay for materials, but it is common in such cases that labor and labor costs are due to service.
They probably often became temple entrants due to their livelihoods among such old-fashioned parishioners and believers, but recently, there are changes in the times, such as a decrease in the number of parishioners and believers, or changes in the times, such as substitutions or going out of business, etc., and I also think the current situation is that they are forced to rely on general traders.
Now, as I have mentioned above, I know that the results will be slightly different if you do business with that feeling, starting with the gratitude and gratitude of being involved in the Buddha's affairs, starting with the fact that you can first do business with that feeling.
I wish you all the best.
Kawaguchi Hidetoshi Gassho