I am a mobile mechanic in northern Colorado on the front range.
My minimum service call is $120 within a 15 mile radius.
I am $120 an hour
I am a registered LLC
I don’t normally install customer supplied parts, if I do I do charge extra on the labor and no warranty given, this is stated up front.
I have an AllData subscription and use the labor guide to quote time, I usually round up the labor times, as most of the vehicles I work on are not pristine.
I do mark up parts, it covers my supplies/tools/disposal fees, etc….. And my labor if there is a warranty issue.
I have 2 bi directional scanners, which cover all the cars I have worked on.
If you are asking for a recommendation, I recommend you get setup with an EIN, LLC and bank account. Do it right so you limit your liability and exposure.