There exists  a requirement that the postal services providers shall assure that their pricelists are made in accordance with the rules of competition and transparency. With EETT regulatory decision  768/44 of 2016 [Αριθμ. 768/44 (ΦΕΚ Β 2369/2.8.2016)], the Observatory for Prices at the retail level of the postal sector was set into force.See also: http://www.taxheaven.gr/laws/law/index/law/419