Is there a legally mandated filing fee and/or deposit?

Representation of the People Act Chapter 2:01, ElectionRules (published 1967-12-21, last amended 2000-09-12), http://rgd.legalaffairs.gov.tt/laws2/alphabetical_list/lawspdfs2/2.01.pdf

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 (9) Everyappeal under this rule shall be prosecuted and heard and determined by theJudge in such manner as may be prescribed by Rules of Court, and the costs ofevery such appeal shall be in the discretion of the Judge.