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Invaluable (formerly Artfact) is the world’s largest online auction marketplace of fine and decorative arts, antiques, collectibles, 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.

Auction Houses have the ability to drive bidders to upcoming sales by opting into one or more of the marketing channels we provide our partners. Access hundreds of thousands of bidders in the largest active, engaged auction marketplace with:

  • Exclusive email marketing
  • Newsletter 'Featured Listing
  • Email alert sponsor

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