They say you can eliminate the middleman, but you cannot drop his function. It is how intermediaries found their place in our life. No matter where you look, you will find somebody willing to facilitate the process on your behalf and at your cost.
Do you actually need their services? Well, it is rather easy; calculate your next best opportunity. Like what if you take care of that or other matter yourself without paying that intermediary. How many hours you are going to spend and what is your cost per hour or what other things you could be doing instead of staying in this line. Perhaps dedicate this time to a hobby.
With this approach, you will soon find out what is the right choice for each particular case. It is also important to differentiate the value-adding intermediary’s service from extra payments somebody is trying to get of you.
Another essential thing is remembering that your interest can and most likely will differ from that of the middleman you hired. The intermediary wants your money, and the result is not always the main priority here. Therefore, you need to remember that you are the one who pays and decides what result is satisfactory. Manage your intermediary or replace him with another as you see fit.