Billabong.
I got a pair of Flowmaster 40s imported in the back of someones car. I got a price from Repco and they were ... wait for it ... $ 340 or so each !!!!
My response was 'Do they come with a free LCD TV in them ?'
So , yeah, even with freight, it must be cheaper than sourcing them locally. Repco are the local distributors.
I also got a pair of Hooker Aeros from Speed Pro in Hallam - much better value at only $125 each.
Cheers,
Frank.