Depends greatly on how much you pay for the used laser, also (Boeing had LaserJet 5s for
$1 a month ago).
It seems like there was a sweet spot where you could get solidly built high-resolution
printers (LJ4/5 -> LJ 4100 era about),
that had PostScript (4100 is a clone, but . . .) and use cheap toner cartridges.
My school district IT swapped out some of our old printers (Lexmarks, they were dying
anyway) for new HP LaserJets.
I am not impressed. Short cartridge life, cheesy plastic construction, pricy cartridges
with no 3rd party alternatives.
What's not to like about a 4100? Quality is nice - isn't that one reason we like
the computers we do?