If the owner is willing to do all the grunt work, like opening up all the inspection ports, washing the crud off of the engine, pumping up the tires, and such, any mechanic worth his salt can do the "annual inspection" on an airplane this simple in 8 hours, max for the first one and then 4 hours max for all subsequent annuals. That includes 2 hours of bookwork at home researching the ADs, going over the logbooks from day one for obvious math mistakes, and the like. Then looking the airplane over (that's an INSPECTION, folks).
And I include all the stuff I have to show and tell the aircraft owner all the stuff I had to show the owner the first year (and probably show again the second year).
Now, my car mechanic is getting $120 an hour for his work, including amortizing all the rent, county business licenses, and all that crap. I will not do your airplane if it is not in a hangar. And the county prohibits me from doing work on the airport as a business. So we go to McDonald's after the inspection and I sign the logs over a hamburger. That's what I'm getting paid for, that signature. So I can do annuals for $200, and so what at $50 an hour? I'm keeping GA aircraft in the air without an unnecessary burden on the owner. Who probably has more kids at home than I do.
We have proved SEVERAL TIMES OVER that opening up each and every inspection hole does more harm to the airplane than anything we find inside. Engine compression? Not a problem to do every year? 2 years, 5 years? Pick a number. Or every 200 hours? PIck a number.
But the FAA is stuck back in the 1930s when aircraft with neglected maintenance were falling out of the sky. It would be REALLY nice for the aviation community if some congress-critter does something for the light aircraft community like Basic Med did for the average pilot.
Just my 8% of two bits worth.
Jim