All guides

Original boxes and manuals are not proof of quality, but they can help you judge completeness and care.

Used desk chairs need checks for hydraulics, wheels, fabric wear, armrests, and return logistics.

Used lenses need special attention to glass, fungus, aperture blades, mount compatibility, and sample photos.

Cosmetic wear can be harmless or revealing depending on category, location, and what else the listing shows.

Refurbished phones require checks for battery health, network compatibility, locks, repairs, and return policy.