ἀμοιβός
From LSJ
μηδὲν κοτυλίζειν, ἀλλὰ καταπάττειν χύδην → not to sell by the cupful, but to dole out indiscriminately | not to sell by retail but wholesale
English (LSJ)
ὁ,
A one who exchanges, ἀμοιβοί soldiers that relieve others, Il.13.793. II Adj. in requital or exchange for, νέκυν νεκρῶν ἀ. ἀντιδούς S.Ant.1067; ἀ. ἑῆς θρέψε διδασκαλίης AP7.341 (Procl.). 2 alternating, κληῖδες, of Day and Night, Parm.1.14.