I have sold several things over Ebay, every time somebody does this at the end of the auction.
Anybody that has been to a REAL auction knows that as he's counting "gone once, gone twice" you can up the bid and he will ask for other bids.
I have emailed Ebay several times with the sugustion "if somebody places a bid on an item with less then 5 minutes left, let the auction run for an additional 5 minutes after the last bid. Even if the bidding keeps getting extended by 5 minutes several times, it's ok, Ebay will be making more money.
I would pay more for my auctions to have this option!
But until everybody starts telling ebay thats how they want it, there going to keep using the old way.
I was selling an HR-2510, the guy had emailed me several times with questions, he bid it up several times over a couple days, but at the last second somebody out bid him by a couple $. They started fighting over email. I told them "I don't care which one of you buy it, as long as I get paid the highest bid". The last guy gave in and let the guy who had been emailing me buy it.