A coffee date with Apple chief executive Tim Cook fetched $610,000 for charity, according to press reports.
An online auction generated 86 bids for the meeting at Apple's Cupertino, Calif., headquarters with Cook, who is raising money for the Robert F. Kennedy Center for Justice and Human Rights, CNN reported Wednesday.
Charitybuzz.com, which organized the bidding, had estimated the event would raise $50,000.
Glenda Felden, a spokeswoman for Charitybuzz, said the group would put out a statement with details about the winning bid after it had coordinated with all of the parties involved.
Buffett last year raised $3.46 million for the Glide Foundation, which works to alleviate suffering and break the cycles of poverty and marginalization.
The winning bidder, who can bring a guest along, will meet with Cook for 30 minutes to an hour. Travel and accommodations aren't covered for the trip.
The Robert F. Kennedy Center for Justice and Human Rights was founded in 1968 with the aim of helping realize the senator's vision for "a more just and peaceful world," according to its website.
Cook succeeded Apple co-founder Steve Jobs as CEO in 2011.