How do you know they bid exactly one bid over the current bid? Because you can 
see their bids?

Date: Mon, 28 Sep 2009 17:59:59 -0500
From: [email protected]
Subject: Re: [MOPO] An odd incident on this past Sunday Heritage Auction
To: [email protected]

The below is remarkably uninformed. The vast majority of bidders who bid in the 
closing five minutes (thus extending the auction) bid EXACTLY one increment 
over the existing high bid. because they know to a certainty that if they ARE 
outbid, they now have another five minutes to re-bid.

 
Say the bid is currently $310. At this level the bid increment is $10, so the 
person enters $320. If he/she is now the high bidder, then they have to make it 
through the next five minutes, and the item is theirs, and if someone else 
outbids their $320 bid, they have five minutes to notice that and bid again, 
only this time $330.

 
What if the $320 bid were outbid, because the $310 proxy bidder had a "left 
bid" of over $320? If the left bid was say, $400, then when the bidder bid 
$320, he would immediately be told he was outbid and that the bid was now $330. 
He could then either give up, or immediately re-bid, only this time $340, and 
each time he would have the opportunity to bid again, for a full five minutes.

 
A person bidding this way (which as I say, is the way the vast majority of 
bidders who bid in the closing five minutes bid) can never be "run up", because 
their high bid is always the current bid.
 
Contrast this to the auctions with no time extension. THERE, when you are 
watching the item with five minutes to go, and the bid is currently $310, you 
have to enter a much higher bid to have even a reasonable chance of getting 
that item, BECAUSE YOU WILL NEVER GET ANOTHER CHANCE TO BID WHEN THE CLOCK RUNS 
OUT.

 
Now of course, if the auction does not have sniping, then you must enter that 
bid with the auction itself, and they now CAN "run you up". So actually the 
auction that has time extensions actually has far greater protection against 
the bidder being "run up".

 
You ask, what about the auctions with fixed time ends that DO have sniping? 
Yes, in that case a sniper has equal protection against being "run up" as in a 
time extended auction. But that is only true if the auction that has sniping 
lets its bidders know of it! I would bet anything that most of the members here 
had NO CLUE this auction had sniping. A cynic might say that they don't want 
their bidders to know they can snipe THROUGH A THIRD PARTY, because then their 
snipe bids are hidden from the auction house.

 
But the real test of whether auctions "run bidders up" is NOT whether or not 
the auction has time-extended auctions, but how often bidders who give high 
"left" bids get items for FAR under their maximum, and how often bidders who 
give high "left" bids get items for EXACTLY their maximum, or just slightly 
below.

 
I KNOW from my bidders that they OFTEN get items for FAR under their maximum, 
and I have heard far too often of bidders at certain other auctions who give 
high "left" bids and who get those items for EXACTLY their maximum, or just 
slightly below.


Bruce

 
On Mon, Sep 28, 2009 at 4:38 PM, Sean Linkenback <[email protected]> 
wrote:  


Extended bidding (especially with an auctioneer that hosts their own auctions) 
merely allows the auctioneer to see what items are being extended, check the 
high bids and then run them up if they wish.


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