(CNN) -- Apple CEO Tim Cook might soon be sharing Silicon Valley's most expensive cup of coffee. 

Sometime in the next year, Cook will sit down for a cup of mud with someone who has paid at least $210,000 for the privilege. 

Apple fandom taken to its craziest, and costliest, extreme? Perhaps. But it's all for a good cause. 

Cook has volunteered, through the online-auction site Charity Buzz, to share up to an hour of his precious time with two lucky (and deep-pocketed) winners. Proceeds from the auction will go to The RFK Center for Justice and Human Rights, an international nonprofit founded as a memorial to Robert F. Kennedy by his family and friends. 

In the auction's first day, Cook had gotten 52 bids, starting at $5,000 and spiraling upward quickly. The leading bid Thursday evening was $210,000, and there were still 19 days to go until bidding closes May 14. 

The coffee chat will happen at Apple's Cupertino, California, headquarters. The winner may bring along one guest. 

The move fits in with the more open public persona Cook has adopted since replacing late Apple CEO and co-founder Steve Jobs. One of the knocks on Jobs was that he never contributed much of his considerable fortune, or celebrity, to charity -- at least not in the public ways other tech titans like Microsoft's Bill Gates and Facebook's Mark Zuckerberg have. 

By some measures, a $180,000 coffee meeting with the chief of the world's leading tech company might be a bargain. An anonymous bidder paid $3.4 million last year for lunch with investor Warren Buffett. 
How much did it make?
$3.4 million