I tried to find on www.fomoco.com.au
but with no luck. I know that they have them (I recently bought a Cobra bonnet scoop, Bathurst front spoiler as well as a rear spoiler) just can't seem to find them.
They used to have an online price list, maybe I am just looking in the wrong place but trust me, they do have them. From memory I think that the front spoiler was about $250 and the rear a little less. Hope this helps.
ps if all else fails, just ring them up or even easier, email them;