I am thinking of offering a mobile dianostic service in my area for a small charge like 40 to 50 dollars in my area. I am retired and have a lot of free time so I am just doing it to really stay busy. I ammlooking at getting a high dollar machine that will work on almost all vehicles. I need one anyway because I work on my ford, my moms duramax and brothers Cummins. I was just wondering if it was worth trying. I just know most dealers around here charge $140 to just run dianostics. Since I love working on vehicles I figured it might be fun. I am not looking to make a living money is not an issue.