Perhaps I should clarify my earlier post.
I have done warbird work for free, for volunteer organizations, where no one gets paid, and for transients that stop in with a problem. I don’t think this is taking money from people who work on warbirds full-time, but please correct me if I am wrong.
I do favors for a FEW pilots, whom I know and respect, and am happy to be repaid with a “thank you”.
I have stopped doing this for total strangers, having been burned by a fair number of ungrateful pricks. I have extinguished two aircraft fires, from broken/loosened fuel lines. The first pilot cussed me out for creating a dust mess with two chemical extinguishers. The second time, the general manager yelled that he wasn’t paying me to fight fires, that was for the fire dept.

By the time the crash trucks could have made the 2 mile drive around the perimeter road, the aircraft would have been a puddle of aluminum.
I stopped loaning tools to pilots years ago. I foolishly believed them, when they said they’d return ‘em, only to watch them start up and taxi away.
I no longer loan tools to fellow mechanics, with perhaps 1-2 exceptions. Some would ruin tools, and put them back without saying anything. Others would break my tools and offer an insincere apology and refuse to pay for it.
The last guy to borrow a tool, left one of my high-dollar, large, specialty tools, in the belly of an airliner, right next to the aileron bellcrank. He knew the tool was missing, never said anything, or even looked for it. The aircraft departed a week later, and it was just pure luck it didn’t crash. When the tool was found, everyone knew it was my tool, and the rumors flew fast and furious. He initially denied it. Had I been present when it was discovered, I’d have probably given the little twerp a few unforgettable memories.
It isn’t just volunteers that sometimes do horrible work. I’ve had plenty of new and old, A&Ps tell me they can do sheet metal work, and within 30 minutes it is obvious they have zero skills and knowledge in this area. Yet, their manager remains convinced that putting Jeffro with me on a big mod project, will get the job done in half the time.

I documented, daily, the additional hours of work, with photos, required to correct a Jeffro’s mistakes. I showed them to the manager, daily. Jeffro only got pulled off the job when I quoted $10,000+ to replace the wing skins he accidentally cut into.
My introductory test now, is to hand an apprentice a bunch of rivets, ask them to identify each, and explain a typical application for them. About one in ten can do it.
When I quote labor for an annual, it is for everything except squawks. Research, inspection, servicing, etc. A new C-150 might get done in a day, using a single person, but anything bigger, more complex, much older, or a trash heap, is gonna take longer. I don’t pencil-whip anything. It also depends on the aircraft’s inspection forms. Six pages for a Piper compared to 38 pages for a Socata Trinidad. I use the manufacturer’s inspection guides, not a homemade, 4-page generic inspection checklist some people use.
