26 It is the effect of the respondents' submissions, both to the arbitrator and me, that the notion of an agreed genuine pre-estimate of loss as contemplated by Lord Dunedin is, as his Lordship expressly stated in the passage relied on by the claimant, to be determined as a "question of construction" of the contract, and is to be decided "upon the terms and inherent circumstances" of each particular contract; see Dunlop at 86 - 87. So viewed, in the respondents' submission, as the parties entered into the contract which expressly provided for the sum of $3,000 per week as "liquidated and ascertained damages", in the absence of something to the contrary being established, the notion of an agreed genuine pre-estimate of loss was sufficiently or prima facie established by the agreement itself. It therefore fell to the claimant, the respondents submit, to establish that the sum of $3,000 per week was not liquidated damages but a penalty, cf Multiplex Constructions Pty Ltd v Abgarus Pty Ltd (1992) 33 NSWLR 504 at 527, and to do this the claimant needed to show that the sum of $3,000 per week is extravagant, exorbitant or unconscionable; see Clydebank at 10-11, Dunlop at 87, AMEV-UDC Finance Ltd v Austin at 190. This is to be viewed, of course, it is submitted, as at the date of the contract, not now; Dunlop at 87.