The winning bid came in the closing seconds of the five-day eBay auction, which drew 41 bids before ending on Friday night.
The Money will go to Glide, a San Francisco charity that provides food, health care and other services to the homeless, the impoverished, and people struggling with substance abuse.
The successful bidder and up to seven friends will dine with Buffett at the Smith & Wollensky steak house in Manhattan where they can freely discuss all topics apart from where Buffett will invest next.
In the past, Buffett has held 18 annual auctions for Glide, raising about $26.3 million. He became involved with Glide after his first wife, Susan, became a volunteer, prior to her death in 2004.