Virtually every lot is sold subject to a reserve price (the minimum price that the auctioneer is authorised to sell for). Regardless of whether your bid is above or below the reserve, the current bid will always jump to the amount that you've bid.

Caution: If you are the current highest bidder at or above reserve then you will not be able to increase your bid until another bidder has outbid you.

The online auction will close as per the advertised 'End Date'. However, if a bid is placed within the final 30 seconds of the auction's scheduled end time, the auction will be extended by an additional 30 seconds – known as the 'bidding extension window'.

If a bid is placed in the 'bidding extension window', the countdown clock will immediately reset to 30 seconds again, and the auction will only finish when an entire 30 second bidding extension window passes without any further bids being placed, i.e. 30 seconds of 'bidding silence'.")

NB: Do not leave placing your bid to the last few seconds. It gives you no advantage, you risk your bid not being received by the server in time and you could lose the lot to another bidder.