i'd doubt GNC would go for it, as they have the rights to sell Atkins stuff here in Oz exclusively as far as i know, and they probably wouldn't want any competition. but it's still worth Bohdi's trying there.
Prohealth at Northland Shopping Centre in Preston have always been really helpful and not biased against low carb (to me anyway) their number is: 03 9478 0022
i'll see if i can come up with some others for you.