The findings of a comparative study of cost awareness amongst particular groups of health service staff are reported. The study is a repeat of that undertaken in 1987 by Fairbrass and Chaffe. The findings are compared to assess how awareness of the cost of anaesthetic drugs, fluids and disposables has changed as a result of the publicity since 1987. Without prior warning, the study group were asked to estimate the cost of twenty-eight items. The results show that their degree of accuracy remains poor. Overall the tendency was to overestimate costs, whilst a small number of expensive items such as volatile agents were consistently underpriced. The results show that, over the last three years, there has been no significant change in the knowledge of cost awareness. At a time when the effective use of scarce resources is being emphasised, a staff programme of continuing cost awareness training is recommended.