After Jack Dorsey made an NFT out of his first-ever tweet, then-cryptocurrency executive Sina Estavi won the auction in March 2021 with a 1,630 ETH bid (then around $2.9 million). A little over a year later, on April 6, Estavi tweeted that he would be selling the NFT. He listed the NFT on Opensea for 14,969 ETH (around $46 million), in an auction slated to last a week. When the auction closed, there were seven offers ranging from 0.0019 ETH ($6) to 0.09 ETH ($277). It's still up to Estavi whether or not to accept a bid.