Should I buy a used Logitech MX Master mouse?

Yes—buying a used Logitech MX Master can be a smart buy if the price is meaningfully below new/refurbished and the mouse is in good physical condition. I’d be most comfortable buying a used MX Master 3 or 3S from a seller with returns, clear photos, and confirmation that the scroll wheel, thumb wheel, side buttons, left/right clicks, and Bluetooth/receiver connection all work.

I would skip it if the savings are small, the battery condition is unknown, the rubber coating looks shiny/worn, or the seller can’t confirm basic functionality. For productivity work, the MX Master line is strong, but wear matters a lot on used mice because switches, scroll wheels, coating, and batteries are all parts that can degrade.

Quick buying checklist:

1. Prefer MX Master 3 / 3S over much older models unless the older one is very cheap.
2. Ask whether it connects by Bluetooth and, if relevant, whether the USB receiver is included.
3. Check photos for worn thumb rest, peeling rubber, gunk around buttons, or damaged feet.
4. Confirm all buttons and both scroll wheels work.
5. Compare against current new/refurbished pricing before buying; if used is only slightly cheaper, buy new or refurbished instead.