Yes, I think I was mistaken. My thinking was based on a previous title, which didn't specify Coinbase "Wallet" and included the phrase "exchange fees". If they

Yes, I think I was mistaken. My thinking was based on a previous title, which didn't specify Coinbase "Wallet" and included the phrase "exchange fees". If they were the fees from Coinbase's trading application, they wouldn't be strictly the gas fees as charged by the Ethereum network. Tweets in the thread also specify gas fees and this is exclusive to NFTs, so I suspect the fees in question are indeed the network gas fees. Sorry for the confusion.