Mashelufu a sitolo ya supermarket ndi ntchito yokongoletsera njira zowonetsera luso lophatikizira katundu, kulimbikitsa katundu, kukulitsa malonda amtundu wa mawu. Ndi "nkhope" ndi "wogulitsa chete" zomwe zimasonyeza maonekedwe a katundu ndi makhalidwe a kasamalidwe ka sitolo, ndipo zimagwira ntchito yofunikira pakulankhulana pakati pa sitolo ndi ogula.
Zogulitsa zawo sizingokhala ndi khalidwe lapamwamba, komanso zimagwiritsa ntchito njira zowonongeka ndi zachilengedwe, zomwe zimagwirizana kwambiri ndi filosofi yathu yachitukuko.