I sold my last copies this week. It looks like RHB has some copies at $25 +postage. It cannot be many. This was a limited printing of about 560 copies and retail is ~$53.00. This contains the debate papers of the Westminster Assembly between the Congregationalist miniority and Presbyterian majority (making it the largest production of the assembly). And while not a systematic treatment of church polity, it is important in the literature nevertheless. Whether a connoisseur of the literature or not, when these are gone that's it. Historical intro by Rowland Ward. Appendix contains the fuller version of my research into the book resources of the assembly (particuarly for those members not from London and far away from their personal libraries, several of whom wrote some of their most important works while there, e.g. Rutherford, Gillespie).