Hi saffie,
If you have no luck in Brissy I am cleaning out my racks and have the folowing boards.
5'10" x 18" x 2 1/4" Warren Cornish strapped custom kiteboard strong triple 6oz great cond, full grip, red x fins $290 (ad still on seabreeze for this one)
6'2" X 18 1/2 X 2 1/2" Crisp shaped Maddog 4 oz strapless surfboard, rear pad, fcs, as new $220
6'2" x 18 1/2" x 2 1/2" webber 4oz surfboard with strap inserts, full grip, fcs, bit weary not dead yet $100
Plus others as well. I'm in Byron Bay but go to Brissy alot. Send me a message if you're interested.