Mick (& anyone else interested)... Photo Resource has been operating for years, they used to be in Queens Pde, Clifton Hill. New address is:
1/430 Rae St. North Fitzroy. If you're driving a long way it may be best to ring first for availability as they will order items which are not fast movers. I often buy my large format film there (5x4). They also carry some second hand darkroom stuff & usually do have a stall at the twice-a-year Camberwell Photo Market. & no, I don't have a financial interest in the place... it's just close to where I live! I think they also supply schools & TAFE's etc.