30 However, if payment is demanded, the owner may redeem his life by the payment of whatever is demanded.

Read Exodus 21:30 Using Other Translations

If there be laid on him a sum of money, then he shall give for the ransom of his life whatsoever is laid upon him.
If a ransom is imposed on him, then he shall give for the redemption of his life whatever is imposed on him.
However, the dead person’s relatives may accept payment to compensate for the loss of life. The owner of the ox may redeem his life by paying whatever is demanded.