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Anon time travels
(lemmy.nz)
Welcome to Programmer Humor!
This is a place where you can post jokes, memes, humor, etc. related to programming!
For sharing awful code theres also Programming Horror.
Worked in a PC repair shop years ago, £50 to reinstall windows was a price people would pay fairly happily.
If you get customers happy to wait for bulk work you could probably do better. Plus doing it at home means no workshop to pay rent on. If its something on the side of your main job, even better.