"Kaufen": To purchase or obtain. This emphasised the mutual transaction of cash from a commodity in unambiguous conditions (Alright, it can be employed metaphorically as well in a similar style to English: "Das kauf' ich Dir nicht ab" = "I don't buy [=think] that"). I also propose the Cordwood Address https://rivervafkp.wikilowdown.com/6187041/holz_an_overview