The paper briefly discusses some issues approached in the study ‘A comment on the law of supply and demand’ by M. Northrup Buechner, published in this issue of J Phil Econ. The way of discussing is logical-theoretical, without bringing into attention empirical data. Even less than that, only a few of the issues debated in the original study are examined, namely those issues which appeared to this author as both the most problematic and susceptible to drive the future discussion in the matter.