to make a deceitful sale; to buy under price and sell above it (see Molina)
Alonso de Molina:
tiamic aquitia. nite. (pret. onitetiamic aquiti.) vel. nitlanecuiloa.mohatrar. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 112v. col. 2. Thanks to Joe Campbell for providing the transcription.