How much will you ask for a windows form app that is for students and is completely functional for a restaurant if i only expend like 10 hours in the developing?

You want an app that works for students and restaurants and does what? And you want to develop it yourself? And get paid? 🤔

the time you spent in doing it doesn't matter.
The fact that could be basic or easy, doesn't matter.

What matters is how much is the customer willing to pay for it.

That's something you must understand yourself.

Just for clarification: You want to sell your self made app to students, right?

I can only agree to what @deviloper said: How much work you put into, doesn't matter. How much the target group is willing to pay, is the matter here. I'd probably approach some of the students how much they'd pay - if they would pay at all.
Unfortunately (for you, a customer probably sees it differently) the willingness to pay for software has sunk dramatically in the last 10 years and please don't forget your target group are student, usually short with money.

P.S.: Welcome to devRant!

3 simple questions:
- who's paying
- what's it worth to them
- do you need to support it later

If you can answer all that, then you should be able to derive a figure.

Standard hourly wage + 25% mental health compensation for using winforms

@M1sf3t Dunno about whatever googles version is, but our school forced our class to do one of our examn projects in winforms. This was about a year or so ago and I'm still having nightmares

@M1sf3t googles what?

@M1sf3t winforms is a GUI library for .NET😅

@M1sf3t no, its a project of a subject it's just for students

@M1sf3t i've done it already, i justo want to know if the ammount of money that i asked them is fair enought

About two fiddy