In my experience this is a bad way to approach things. Far better to frame the conversation in terms of how much value the customer will derive.
My personal example: through a combination of political cleverness and tech-savvy, I saved a company several million dollars. That anchor makes me seem much more valuable than if I start by comparing myself to an average programmer, and describe how my services are better (in fact, my technological skills are substantially WORSE than the average programmer's, which would make it an even harder sell).
My personal example: through a combination of political cleverness and tech-savvy, I saved a company several million dollars. That anchor makes me seem much more valuable than if I start by comparing myself to an average programmer, and describe how my services are better (in fact, my technological skills are substantially WORSE than the average programmer's, which would make it an even harder sell).