Anonymous bidder paying $3.4 million to lunch with Warren Buffett

It is one of the most expensive power lunches in history.

But for the winning bidder, the lunch with billionaire Warren Buffett is well worth it.

An anonymous person won the online auction to dine with Buffett, by bidding $3,456,789.

Proceeds of the fundraiser will go to the San Francisco homeless charity, the Glide Foundation.

Buffett held a week long bidding war on eBay.

The winning amount ties the winning bid in 2012.

Buffett's lunches have raised more than $20 million for Glide in the past 16 years.

The fundraiser began when his first wife, Susie, introduced him to the foundation in which she volunteered.

Susie Buffett died in 2004, but the lunch auctions have continued.

The winners normally dine with Buffett at Smith & Wollensky steak house in New York City, which donates

$10,000 to Glide each year to host the lunch.

But when the winner wants to remain anonymous, the lunch happens elsewhere.