If you want to do it, start doing it. You can enter more categories and less quantities first, and then enter more according to which kind of sales is better.
Doing business requires improvisation and good communication with students. Tell them what fruit they want to eat and give it to you next time.
In this way, if you do, you are equivalent to a specialized fruit supplier for these students.
To win the buyer's heart in business, the way to make money is to find a way to get him to come back once.
In terms of profit, you need to investigate the geographical location, the distance from nearby fruit shops and the price.
If other stores are far away, you can charge a little more than them. Nowadays, students seldom like to walk long distances.
But the quality must be comparable to other stores.