I had a recent purchase go bad, but the seller quickly refunded everything and said to keep the camera. I determined that the camera's lens was usable, so I sent the seller some cash for it.
Ultimately what matters most to us, in our on little micro-universes, is all that matters. If you want to make a sale then your focus, and justification, are focused on that. In some micro-universes the sale is secondary; sleeping well that night is the primary goal.