Artfact, now Invaluable, is the world’s largest online auction marketplace of fine and decorative arts, antiques, collectible ... s, and estate sales. Across all three of our properties, invaluable.com, invaluable.co.uk, and auctionzip.com, more than 30 million bidders per year arrive in the virtual salerooms of the world’s premier auction houses. Invaluable’s live online bidding platform allows collectors to bid in real-time on auctions held around the world. Founded in 1989 in Boston, with offices in Pennsylvania and the United Kingdom, Invaluable currently has over 80 employees. read more