I had a Samsung CLX 3175 brand new. Loved the device as it did everything it said it would quite well, and I found cheap refills on ebay.
However despite light usage the scanner didn't last very long.
Then I got a CLX 3170 that had been heavily used on eBay - my original plan was to strip it for parts and fix the 3175, but I got half way stripping the 3175 then just decided to use the 3170 as it came. Only lasted a few months before that packed up as well. If I remember correctly it was a malfunctioning sensor claiming a paper jam when there was no paper in there, had a look at the sensors to see if something got knocked out of alignment but couldn't see anything obviously wrong so that also went in the bin.
Shame as the devices worked well but they didn't last long.
Also I thought I would mention it's widely known that Lexmark sell dirt cheap printers with extortionate refill costs. Avoid like the plague.