4.39 Procurement costs for the public sector are not included in the Public Sector Comparator (PSC) under the current guidelines, and so the evaluative comparison made on small projects in the past would not have captured these external value for money factors. To address this issue, proposals for a reform of the PSC are outlined in Chapter 7, which will enable value for money appraisal to take into account both the procurement costs associated with a PFI project, and the strength of market interest it is likely to generate.