standard 1 tone, 250-300, two tone around 400-500. if ur in northern burbs go GP Smash repairs in miller st, 53 or something, he does an awesome job. he done my 33 front bar and grille, which was still only in gel coat, for 300.
speak to him, if u say u take the bar off and all he has to do is spray no probs. if u want him to take the bar off and then re-fit may charge a little more cos of labor.