Believe it or not but I'm around a 25% profit margin...and have been for about a year. I have 4 employees and 3 service trucks. My average service call is closer to $350.

I get there for $100 but sale three times that. Haven't you ever walked into a store for something cheap and walked out with an armload of stuff?

How about that $15.99 oil change and you wind up buying new tires while your there, and flush the tranny? It's salesmanship.