Starting tomorrow American Express cardholders can bid online for nine declining-price travel packages, offered in varying quantities, ranging from 10 to 30. AmEx will auction off one travel package a day – and once a trip goes on sale, the price drops every twenty minutes. The deals will continue to drop in price until 7:00 pm ET or until the packages sell out, whichever comes first. The “Going Once” Web site will also feature 19 fixed price packages under $3,000 and more than 150 travel deals. The first package up for bidding is a six night trip to Florence which starts at $7,740. The promotion will end on April 27th. For more information visit: “www.mylifemycard.com/goingonce”:http://www.mylifemycard.com/goingonce.