My mate in Cronulla created this monster. http://surfboardsale.com.au it is pretty good, an alright facebook page for discussing stuff, but it mainly lists all the surfboards from ebay.
i got my first board from a ebay listing from this site. it was second hand and from manly but i only bought it for $125 AU. it is a 7ft2 short. kinda hard to learn on but i got therr.