How do you set a price for an hour of your time?
This week I made a project that took me 14 hours in a row to finish it and they paid me 25$.
Being honest I consider that project would have taken them at least 40-50 hours ?

How much money would you have asked them?

You should have charged slightly less than it would have cost them to do it in 40-50 hours.

Well I hope you're not in the states, otherwise you got screwed. You basically made just over a dollar an hour.

I... have an hourly rate? Take your wage (or a wage you would be happy with) and just divide it to hours

I divide into days, hardly ever I do something that takes less then a day.

I also add half of time to bug fix and some minors.

So for example:

Everything less then 5-6 hours is day,
day is 1.5 days,
2 days are 3 days,
1 week is 1.5 week,
and so on.

If there is fixed price so wage and requirements I divide requirements to days and then divide by my hourly rate.
Usually those numbers don’t work so I try to think if I want to do it ( I usually want if I need money and client seems nice, not someone who would argue for every detail). If I don’t need money I politely apologize and resign.

$25?
Tell me you're crazy or live in a third-world country where $25 is worth significantly more in your local currency.

@spongessuck never thought that way!!!
So makes a lot of sense!!

Based on average salary in the US for my skillset, it would be about $72/hour. I wouldn't accept less than $60/hour. I'm not sure what the equivalent would be in El Salvador, because of the cost of living difference.

50€/h at least

Companies that do IT support (MSPs) regularly charge upwards of 150-300+ USD / hr to cover overhead , multiple employees and to be profitable and cover costs of doing business (office rent, taxes etc). Unless customer has contract for certain services then the cost is much lower.