Children and minors can easily enter into financial transactions without any safeguards or adult supervision. Suggest the site prominently displays a caveat to adults who enter into transactions with kids. My neighbors son (13 y) purchased a malfunctioning mobile phone at a street corner for an exorbitant price from an advertiser on this site.
Buy and sell everything from second-hand cars to mobile phones, or even find a new home. Find a great deal close to you, or search all of Sri Lanka.