Should I buy a used Logitech MX Master mouse?

Yes — a used Logitech MX Master can be a very good buy if you want a premium ergonomic productivity mouse at a lower price. If possible, I’d aim for an MX Master 3 or 3S over the original MX Master or MX Master 2S, since newer units are generally the safer used purchase.

What to check before buying used:

• Battery health: ask how long it lasts on a charge and whether it charges normally.
• Cosmetic wear: inspect for heavy shine, worn or peeling surfaces, and any stickiness on the grip areas.
• Buttons and scroll wheel: make sure the main clicks, side buttons, and scroll wheel all work smoothly.
• Connectivity: confirm whether it includes the receiver you need, especially if you don’t want to rely on Bluetooth.
• Charging port: older models may use Micro-USB, while the MX Master 3 and 3S use USB-C.

A few practical notes: older models can be a bit riskier because the internal battery may already be well used, and the rubberized outer surfaces can wear down with age. It’s also worth testing the scroll wheel’s free-spin/ratchet behavior, since any issue there would be especially annoying on an MX Master.

If you want less risk, Logitech’s refurbished MX Master 3S is a solid alternative, since Logitech says refurbished devices are cleaned and inspected.

Bottom line: buy used if the price is good and the mouse is in clean, well-tested condition; otherwise, refurbished is the safer choice.