1977-2005 I was paid as an Electronics Technician $7 to $20 per hour with excellent benefits (vacation, US health, retirement). I did get tired of living in sorta-poverty.
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compare it to the cost of a painter…...
Outside painters have to charge more when they do work because they can't work in the cold or in the rain. Yes the painters I know do other stuff too, but their investment in ladders truck etc dents their income.
Auto mechanic "may" be a different sort of comparable. They work rain or shine. They do need a lot more tools than most ETs own. Any shop with a Brand Name outside wants mechanics with training and certification in several specialties.
ASE has many certificates.
In US broadcasting, "ticket" was the FCC license to operate certain classes of transmitters. Every radio station had to have one or more FCC-blessed technicians to be sure the station stayed within the rules.
(This is now done with robots: automated monitoring and far-away engineers who review technical logs for hundreds of transmitters and sign-off for compliance.)
Tiring of an ET's pay, I got my job re-described as Network Admin, $24. Like grease-monkeys, in this field there are LOTS of "tickets". Novell certified, Microsoft certified, Oracle certified, you can paper your walls with certificates at $500-$15,000 each.