A typo has cost the owner of an expensive Bored Ape Yacht Club non-fungible token (NFT) $400,000 after he accidentally put a decimal point in the wrong place.
Maxnaut was attempting to sell one of his NFTs for 75 ether, worth around $444,000 at the time. Instead, he listed it for 0.75 ether or just $4440.
He realised instantly he had made a mistake, but by then it was too late. An automated system that scans NFT marketplaces looking for undervalued NFTs snapped it up immediately.
The buyer then paid a massive 'gas fee' to complete the transaction quickly - around $47,000 - before instantly putting it back on sale for just under $370,000.
The gas fee is a payment that is used to cover the cost of the computing energy needed to process and validate transactions on the blockchain.
It's very expensive to do so on the ethereum blockchain at the moment because of congestion, with so many people trying to make transactions.
The bored ape has since resold for just under $370,000 worth of ether, netting the user of the automated program a very handy $320k profit in under two days.
However Maxnaut has remained unperturbed by his costly mistake.
"Sometimes you f**k up, make a bad buy, out of gas fail, send Eth to the wrong wallet or fat finger a listing," he tweeted.
"It's going to happen. But, letting it occupy your mind for even one second after you can no longer affect the outcome is purely hurting yourself twice."
His 'c'est la vie' attitude may be helped by the fact he currently has 414 other NFTs currently registered against his name on trading platform OpenSea.
Many are worth just hundreds of dollars, but he does have another Bored Ape Yacht Club NFT on sale at 1000 ether, worth around $5.6 million.
The Bored Ape Yacht Club is a collection of 10,000 unique NFTs, each one granting the owner access to a members-only website and additional benefits.
Just yesterday one smoking a pipe and shooting laser beams out of its eyes sold for $2.07 million, according to website NFT Stats.
Over $50 million has been spent on bored apes in the last seven days alone, with the floor value - the minimum you can expect to pay for one - now sitting at around $300,000.