HP Pro 200 m251nw - anything important to know?

[Fenrir Enterprises]

For my monochrome laser I generally just get whatever cheapest 3-pack of aftermarket toner carts that have a decent amount of reviews and over 4 stars on Amazon. I just picked up this color demo model on clearance and I'm curious if there's anything I should watch out for using aftermarket toner and general maintenance of parts.

Seeing CMY+2xK sets averaging $100 on Amazon.