Justin Sun, the founder of Tron, announces on Twitter that he has won an auction for the 20th anniversary charity lunch with Warren Buffett. His $4.5 million winning bid is record setting. He will be able to up to 7 friends to lunch with Buffett in New York at the high-end steakhouse Smith & Wollensky.

Bidding goes on anonymously for a week through auction held online. This year’s began at $25,000 on May 24 and quickly rose. The previous record for the winning bid was $3.45 million.