The Men's Shed group bought a multi-function laser printer to go with the 21.5-inch iMac they bought last October. When the shipped (smaller) ink cartridges ran out, cheaper recycled ones were sourced for $140 instead of genuine Fuji-Xerox ones that would have cost $380 at least.
One member with laser printer experience said we would have to use it in "non-genuine" mode to use these cartridges, so that setting was used. There were some issues with doing it that way: the toner level indication was disabled and it wouldn't transfer images properly to heavier or shiny paper.
In desperation last week I (on the organising committee as the IT bloke) changed back to the "genuine" setting and fixed the problems. Quite happy with that.