Is this possible, please?

Hi,

I would like to set up a one page ‘Dutch Auction’ website using WordPress. The auction would run for 7 days with the price dropping by, say, £25 each day.

The 3 elements I need on the page are as follows:-

A plug in or widget that will show the new lower price each day.

A countdown timer that will count down for 24 hours then reset to start again for the next 24 hours and so on.

A link to PayPal.

Because the first person to offer the asking price wins the auction, is there any way that when they click the PayPal button to pay, a message would be screened showing the auction is over and the countdown would be stopped preventing anyone else from bidding? Or am I asking for the impossible?

Any advice would be much appreciated.