(j) enabling the seller or supplier to alter the terms of the contract unilaterally without a valid reason which is specified in the contract [1];
And the annex list is not exclusive. In general any term that is not in good faith is considered non binding for consumer contracts if there was not individually negotiated.
[1] There are nuances, for example such a term might be valid as long as the customer has the option of terminating the contract.
(j) enabling the seller or supplier to alter the terms of the contract unilaterally without a valid reason which is specified in the contract [1];
And the annex list is not exclusive. In general any term that is not in good faith is considered non binding for consumer contracts if there was not individually negotiated.
[1] There are nuances, for example such a term might be valid as long as the customer has the option of terminating the contract.