Your notebook is getting old and you are going to earn some money to get the new powerful, shiny model, selling your old laptop on ebay.
On the other part of the World, a rich lucky guy with the new powerful, shiny model needs to perform some core fucking operations and so decides to get a used laptop on ebay to avoid any risks on his jewel.
So, the scenario is simple: the seller doesn’t know anything about the buyer and viceversa.
When you sell your notebook think as you are going to sell your gun to an unknown. Who is it? A kid? A worker? A paedophile? A malicious Hacker? A terrorist? Or maybe the next Snowden, hunted by secret services worldwide?