At what point after a sale does a faulty item sold in these classifieds cease to become the responsibility of the seller? If you purchased an item for a little under £700 and after 10 days it began to show a fault would you expect the seller to tell you to take it up with the manufacturer because the item which was sold to them ex demo making you the third owner is still under warranty.

As the seller of the item would you reimburse in full and take it up with the company you purchased from or just wash your hands of it.

We all buy and sell on this and other forums sometimes exchanging hundreds or thousands of pounds to people who don't really know because of a trust that all parties will act honourably.