It depends on the problem you are facing. If the problem is a simple problem I'm sure that they will only charge you a little. But if the pretty serious then that is the time they will charge you big. Advice for you that be wise on choosing the best plumbing service for your problem.
Hello there, Well its depend on the damage they are fixing. If the damage is small in that part the fee will be small. But if the damage is big and hard to fix in that part the cost will be big too. But you can ask your friend if they know someone that is only asking for a small cost. The other way is you visit on the web if you have an internet connection at home and search the nearest and the cheapest plumber service in your place.