Worth their weight in what?

The author expresses opinion on the quality and cost of adjudication in the construction industry in Great Britain. He notes that adjudicators charge by the hour with two elements making up the charge, namely, the rate per hour and the number of hours spent. He stresses that the nominating bodies can and must monitor fees. He suggests a way to avoid the appointment fee and securing the services of an adjudicator that both parties trust.