(1) If the conditions in paragraphs (2), (3) and (4) are met, regulation 10(1) does not apply to an off-premises contract where -

(a) the contract is a service contract,

(b) the consumer has explicitly requested the trader to supply the service for the purpose of carrying out repairs or maintenance,

(c) the obligations of the trader and the consumer under the contract are to be performed immediately, and

(d) the payment to be made by the consumer is not more than £170.

(2) The first condition is that, before the consumer is bound by the contract, the trader gives or makes available to the consumer on paper or, if the consumer expressly agrees, on another durable medium -

(a) the information referred to in paragraphs (b) to (d), (f) and (g) of Schedule 2,

(b) an estimate of the total price, where it cannot reasonably be calculated in advance, and