Dictionary entry

ἀντάλλαγμα

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

ἀντ-άλλαγμα, -τος, τό

(ἀντί, ἄλλαγμα; < ἀλλάσσω), [in LXX chiefly for מְחִיר;]

an exchange, the price received as an equivalent for an article of commerce: Mt 16:26, Mk 8:37 (cf. Si 26:14; and v. Swete, Mk. 8:37; Cremer, 90).†