-
It depends on how much work it needs and what they are using to do it. Most times I sharpen a kitchen knife it takes a few seconds, I don't wait till they need regrinding.
If I need to use a stone and oil it takes a while to get the stone, get the oil and lube the stone, but it only takes a moment to put an edge back on.
If they have a workshop set up to do it, and people coming in regularly, and the skills then two minutes is easy!
Fuck me, how can they sharpen a knife in 2 minutes?
That's crazy talk.