Have you had computer repair work done recently?

Members of an online community of computer tech volunteers helped me fix a computer problem. I’d like to send them a small donation to help keep the site going. So, I’d like to know:
If you’ve had your computer fixed recently, how much were you charged? Was the fix major or minor? And did the tech make a house call?
By “major” I mean things like hard-drive failure, virus eradication, transferring all files and apps from an old computer to a new one, changing to a higher capacity drive, BSOD problems, etc.
By “minor” I mean removing annoying popups, installing or removing Windows updates or Windows applications, optimizing or adjusting settings, changing the battery, etc.
No need to mention names. I don’t have unlimited funds, but I’d like to make a decent donation, am looking for guidelines.

Thanks for your help!