In other words, you can get a 50% profit by buying cheap Petro and spend it at the merchants.
Carnet de la Patria: caracaschronicles.com/2017/02/02/602…
caracaschronicles.com/2018/11/15/reu…
How Venezuelans exchange Bolivars into Dollars:
caracaschronicles.com/2019/12/06/cuc…