<prompt> Translate the following text to SwahiliIn short, the rate structure could be established in order to be competitive or to base the prices on the actual costs of the mail, and worksharing activity could occur as a natural result.  <response>: Kwa kifupi, muundo wa kiwango unaweza kuanzishwa ili kuwa ushindani au kuanzisha bei juu ya gharama halisi za barua, na shughuli za kushiriki kazi zinaweza kutokea kama matokeo ya asili. 