Calling in the professional means you get to spend little money on the fee, but it also means resting assured that the problem is indeed solved.
Now many of may think it’s easier to fix it yourself, but, mind a few things, first.
For example a clogged toilet may be simple to unclog. You just need a little handiness and a plunger. With a little luck, you might be able to fix it yourself. However, when the clog is not in your sight, it is better to call in emergency plumbers that could easily fix the problem, for you. It may be cheaper, than trying to unclog an out of reach pipe, yourself.
Also, if you have a leaky toilet but you know what to do, it may be wise to try and repair it yourself. However, if you want to avoid a flood maybe you should consider calling emergency plumbers. It is quite cheap, but most importantly, secure.
Also, there might be situations when you will be able to shut off the water supply, it is recommended to not try and fix your water heater all by yourself, especially if its primary fuel is gas, propane or oil, in which case the risk of explosion is major.