What happens with the unsold items?

Unsold items are no longer available after the closing of the Buy or Bid sale.

Items remain unsold if they do not receive a bid, or the received bid is below the BidAsk Spread.
The BidAsk Spread shows the gap between the minimum accepted price and the BuyNow price.
If an item receives a bid below the BidAsk Spread and it is not accepted by the seller at the end of the sale the item remains unsold.