 By 1958 there was a membership of at least 150,000.In the Promenade Concerts season of July to September 1958, World Records had a full-page advertisement (offering monthly releases at between 22s 6d and 24s 9d per disc, only one needing to be chosen per year) on the inside front cover of all the individual concert programmes, facing the actual music listing for the evening - a competitive space, placing it on equal footing with Electric Audio Reproducers, EMI Records, Decca Records, Grundig Tape Recorders, Ferguson Radiograms.A full-priced record then cost around 40 shillings (£2).