Markdown Monday is a timed auction that begins on Monday and ends on Wednesday at 3 p.m. ET. These timed auctions are a great way to buy and sell heavy-duty trucks, construction equipment, farm equipment, trailers and much more. The timed auction process is convenient, easy, and designed to maximize both the buyer and seller satisfaction. Bids are welcome at anytime during the run of the auction. All questions must be submitted prior to placing the bid.