Ill say this: if they can not follow directions on how to properly oil an air filter, they need serious help. Even some small engines use oiled filters (lawn mowers, trimmers, ect).
That is my standard billing rate per hour of labor. Other shops in this area are going up to $80, so I will be too in a while.
That's $60US per billing hour (book time). I only flat rate some jobs, or certain customers jobs. If book calls for 4.4 hours, and you get it done under that, you get your money for 4.4 hours. I would have to add a $5 per hour mark up on the labor to cover over head. When it's just me, 100% of the money goes in to my pocket. Then I pay the bills as needed. My accountant hates me, but he only does my taxes.
I'm not saying you couldn't do it. I'm saying come down, do the work I do, deal with the people I deal with, ect, and see how things go. Then you will have a clear picture as to why I am like I am.
I bet you would even get along well with the Buick-GMC-Hummer tech that does some work out of my shop. He's been a dealer puke for over 15 years. Hell of a great guy, all he know's is cars & driving. He got taken off the Hummer in because he dared as for a raise. He gets around $27 US per book hour of labor, even though the dealership bills his labor at $80+ an hour. All the dealers around here do that.
The only dealers I worked for were used car dealerships. Which I know from knowing dealer guys is a totally different world. Charles BTW: Dealer Puke is local slang for Dealer Tech. I guess some here take it as an offense.