Somebody sells at 4k instead of 40k. Who gets it? If somebody sells x amount of BTC (or any other crypto) mistakenly at 4k instead of the current 40k (assumption), who will get it and for how much? Will somebody just be the happy one?
AFAIK, if it is the same as stocks, then it is &quot;The person who entered it first&quot;, meaning:
If somebody put in the limit order to Buy At $33,000, before you, then your $4000 will be matched to his limit order, but because he entered it first, then the transaction between you and him will be $33,000.  That's the rule.
There are tons of buy orders to buy at $33,000 or $32,999, so the $4000 will be matched by those numbers first. (and it will be sold at $33,000 or whatever the highest bidder is).