During this six-hour window, between 9 a.m. and 3 p.m. CST, Thursday, December 10, you can book select 2010 A&K journeys at astonishing discounts. How low you're willing to go depends upon your nerve. During the six hours, program pricing will decrease every 30 minutes while availability lasts for savings of up to 60% off. Trips range from a safari in Tanzania's Serengeti National Park to visiting Chile's lush forests of Torres del Paine and the glaciers and fjords of Patagonia. To start bidding, visit Aberrombie & Kent's Once in a Lifetime. The trips are on specific dates, so view the itineraries before bidding.

