Often the bookies don't comply - i.e. If your horse runs second or third get your bet back up to $50 excluding NSW, SA etc. I live in SA and i've got my $50 back every time even though they don't have to.

Unfortunately the rules are put in place to stop enticing the small number of people that are problem gamblers which in turn negatively affects the larger number of people that can use those offers to their advantage without being problem gamblers.