Ask at the forum if you have an Ancient or Modern Greek query!

покупка

Φιλοκαλοῦμέν τε γὰρ μετ' εὐτελείας καὶ φιλοσοφοῦμεν ἄνευ μαλακίας -> Our love of what is beautiful does not lead to extravagance; our love of the things of the mind does not makes us soft.
Τhucydides, 2.40.1

Russian > Greek

покупка = ὦνος, ὠνή, ὤνησις, ἀγόρασις, ἀντίκτησις

(Translation based on the reversal of Dvoretsky's Ancient Greek to Russian dictionary)