Well that depends….
I start at a bottle of nice French Red ….
For little things like sorting out why your cloud is cloudy, or BT seem to have given your password to some nasty little hacker on the other side of the valley/world
To a couple of bottles or so if the work demands a little more attention.
To hourly rates of £25 ph
To fix priced project against quotes
No fix no fee
Sounds a bit like some rapacious legal firm….but in my case it’s simple: if you ask me to fix it and I can’t then there’s no charge.
It’s never happened yet.