G'day Dave,
fees are different everywhere you go depending on things like the prizemoney levels your racing for in those areas size of stable etc, there are a few around here ( Hunter Valley NSW) that are training for around 30 to 35 dollars a day, with various inclusions and exclusions ie: shoeing, transport to races.
There are always deals done on prizemoney share as well which can reduce or even negate the fees altogether again depending on a few things like the quality of the horse and where it is racing.
Cheers,
Dan