In the modern market, many people have a hard time with the word middle men. They assume that there is a person between two parties that is making money off of a transaction for providing a service that is not necessary. What most of the modern purchasing public does not realize is that someone in the middle of a transaction is not just taking unnecessary profit. They are bringing two parties together and filling a need for both of them.
This is why resellers have careers. Resellers make it their business to find professionals that can develop a wide inventory of material. They contract these professionals to build a stock pile of material that is then connected with a client who would otherwise not find that professional. Resellers are in the business of making certain clients and developers both get what they need.