The selling of ultra-luxury properties via auctions is forging its way as an effective and efficient means to sell high-end real estate. The latest auction adventure story is the tale of a 15,000-square-foot residence in Aspen, Colorado that sold for $15.6 million at auction. The selling price is the third highest price paid for a luxury residence in the area during 2013, according to the auction house Sheldon Good Luxury Residences. The deluxe-property auctioneer worked with Aspen Snowmass Sotheby’s International Realty in facilitating the sale.