More revenue from the calls you're already running. Your managers learn to coach, your techs learn to diagnose and present options, and the system stays after I leave.
You don't need more leads. You need more of the leads you already paid for to turn into sold work. If two or more of these sound familiar, the Sprint will pay for itself.
Bring your conversion rate and average ticket. I'll tell you whether the Sprint will pay for itself, and if it won't, I'll say so. I take on a limited number of engagements.