Extended Bidding is in place for this auction site.

If, in the last minutes before the auction closes a new bid is placed, the bidding time for that particular item will be extended 5 additional minutes. Each time a bid is placed, the bidding time will be extended until no new bids are placed.

You will know that the item has been extended by the change of close time as well as a notice that will appear on the item stating "Bidding has been extended on this item".