<prompt> Translate the following text to SwahiliIf the Postal Service should have a greater degree of pricing freedom and be able to engage in negotiations with selected mailers, one way to provide such freedom, even without further changes, would be to allow the Postal Service to operate under inverse price caps.  <response>: Ikiwa huduma ya posta inapaswa kuwa na kiwango kikubwa cha uhuru wa kuweka bei na kuweza kushiriki katika mazungumzo na wauzaji waliochaguliwa, njia moja ya kutoa uhuru huo, hata bila mabadiliko zaidi, ingekuwa kuruhusu huduma ya posta kufanya kazi chini ya viwango vya bei vya kinyume. 