ἰσωνία

A. the same price, cost price, τῆς ἰ. Ar. Pax 1227; τᾶς ἰ. ἀπολυσάτω he shall release him at the original price, Milet. 3 No.140.55 (Crete).
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project