"Kaufen": To acquire or purchase. This emphasised the mutual transaction of money towards a commodity in unambiguous conditions (OK, it can be utilized metaphorically too in the same vogue to English: "Das kauf' ich Dir nicht ab" = "I do not buy [=imagine] that"). Nevertheless, with only some months’ well https://nachrichtenexperte.de/die-vorteile-des-kaufs-in-einem-fachgeschaft-fur-massivholzbetten/