There are lots of great reviews on this brand. Apparently it's OPI quality with the same, if-not-better colour range.
Found a nail supply shop called ProNAIL Supply in Bankstown (9 Greenfield Parade 02 9709 2300). They sell loads of CG, Orly, Essie and OPI for cheap!
CG nail polishes were only $5 AUD! It took me a while to choose only two colours, but here they are: IDK (left, holographic metallic purple) and Fairy Dust (right, silvery holgraphic glitter).
The saleslady packed the bottles in a recycled Orly box to prevent breakage. There were piles of these empty boxes behind the counter.
Can't wait to try CG out. The colours are amazing!