Respuesta :

As there are no given choices to choose from in the question you had given above, let me just cite one of the core practices among the value-oriented marketers. For me, value-oriented marketers should be honest in their dealings, especially to their customers. 
It seems that you have missed the necessary options for us to answer this question, so I had to look for it. Anyway, here is the answer. The answer that is one of the core practices among value-oriented marketers is this: Constantly measure benefits that customers receive against the costs of offerings.