Wow the "auction overtime" will be interesting:
Please note that all auctions on this site utilise overtime bidding. This means if a successful bid is placed within 5 minutes of the scheduled closing time of an auction, then the auction will go into overtime. Auction overtime results in the closing time for the auction being reset to 5 minutes from the time the bid was recorded. An auction will continue to be extended until there are no further bids for a continuous 5 minute period.
It's either very exciting or a non event....seen one auction once go an hour into overtime... Was insane!