Quick checklist

Green flags

A good listing shows the camera powered on, includes the charger, names the battery model, shows the card slot, and includes real sample photos. A small cosmetic scratch is usually less important than a missing charger or broken battery door.

Red flags

Be careful with listings that say "untested", "no charger", "worked last time", or "for parts" unless the price is low enough for a repair gamble. For a first camera, choose boring proof over a cute mystery.

Beginner price rule

If the camera needs a battery, charger, and special card reader, add those costs before comparing it with another listing. The cheapest camera is not always the cheapest setup.