What is the ruling on selling a slightly used item as new with a three-year warranty?

Selling an item as new when it is used is a prohibited deception (ghish), and its perpetrator must repent and seek forgiveness from the buyer. If the buyer does not forgive, then the seller must pay the difference between the value of the item new and used, if the buyer chooses to keep the sale.

However, if the buyer purchased it without considering whether it was new or used, there is no blame on the seller. This is known by circumstantial evidence; purchasing it from an exhibition or a company indicates an intention for a new item, while purchasing it from an auction market indicates no regard for its newness.