For anyone in Sydney try
www.lifetime.net.au , they were selling black (plus many other colours) 1200 x 2400 boards for $70-90 (can't remember now but i know they were cheaper than Mr Ply & Wood who charge $91) although they no longer appear on their web price list, so not sure if they still stock them? They only list the white boards now but i suspect they still sell them.
