A huge mistake has led some Bitcoin user to gift a 3BTC fee to their $1 transaction that was sent December 2020.
$33291156ab79e9b4a1019b618b0acfa18cbdf8fa6b71c43a9eed62a849b86f9a
This can happen when someone tries to manually craft their own transaction data and accidentally swaps the send amount and fee amount. It could also happen when the full output is not used, the remaining unspent amount becomes a miner fee in the Bitcoin transaction format.
My guess is someone was very paranoid about [...]