What is da fastest way to win a 'immediate payment' ebay auction? pple are completing da sale in 1-9 secs?

I have been trying to win a 'Immediate Payment' style auction on ebay for a week and have not been successful yet. Some people complete the sale in 1-9 secs according to the purchase history. How do they do this, and what is the fastest way to do this?|||Click buy it now and pay via paypal. If there is no buy it now button, you can't do it.