Hello very good choice to talk about this very interesting topic well I tell you that my state markets their prices are quite accessible to the consumer and in relation to the black market always exist but losa goods are not good when they say black market very few people buy are of poor quality and those of the establishments lose and others gain take advantage of the humility and generosity of the people, but that vierne black by the way yesterday here in my region was made people take advantage to buy more than all household appliances.Feliz día.