γνοίης ὅσσον ὄνων κρέσσονες ἡμίονοι → you know how much better are donkeys from mules
cŏëmptor: ōris, m. coëmo,I one who purchases many things, buys up; trop.: testium, App. Mag. p. 321, 31.
cŏēmptŏr, ōris, m. (coemo), acheteur : Apul. Apol. 74, 5.