The online charity auction site Charitybuzz is certainly doing good business. Their goal is to bring together celebrities and brands to benefit charities. In 2013, their figures show that they raised $30 million with their auction of close to 12, 000 packages.

Since launching, they have raised a whopping total of $100 million for nonprofits. Here is a taste of their top celebrity auctions from 2013:

You, too, could meet Apple CEO Tim Cook for $610,000

You, too, could meet Apple CEO Tim Cook for $610,000

For $26,000, a fan got to attend the premier of Lee Daniel’s The Butler and meet Oprah Winfrey, Cuba Gooding Jr. and Lee Daniels on the red carpet. Proceeds went to La Jolla Playhouse.

For $33,125 someone was able to pitch a business idea to Dallas Mavericks owner Mark Cuban. The proceeds benefited WWE Superstars for Sandy Relief.

It only cost $36,000 to play a round of golf with Mayor Michael Bloomberg. Proceeds went to the Humane Society of the United States.

For 45,000 one person got to have a walk-on role in the Superman/Batman film that will star Ben Affleck, Henry Cavill and Amy Adams. Proceeds went to the Dominic M. Aguilar Special Needs Trust.

It only took $110,000 to get a private dinner for four with President Clinton. Proceeds went to Oceana.

Finally, for $610,000 someone gets to have coffee with Apple CEO Tim Cook at the Apple headquarters. Proceeds are going to The RFK Center for Justice and Human Rights.