Recently Newegg started shipping certain items directly from Australia, hence a lot of their items now have shipping prices in the reasonable ~$16 ranges. On top of the already low (usually) prices they have over local offerings, it makes for some decent deals. I've had a quick look through their graphics cards section and noted down some popular current generation cards with a decent saving over local prices. These are all in AUD with shipping costs to Sydney area included:
GTX 970
EVGA ACX 2.0+ $423.61
GTX 980 Ti
EVGA SC+ ACX 2.0+ $901.82
MSI OC $858.40
Gigabyte Windforce 3 OC $859.11
R9 390
MSI Gaming $437.53
PowerColor PCS+ $437.93
R9 390X
HIS $550.53
R9 Fury
XFX Triple Dissipation $788.82
R9 Fury X
XFX $938.01
I've only included ones that are what I believe to be considerably cheaper than what we can get from the likes of PCCG/MSY, etc. When browsing for other items you don't know if they're shipped from within Australia (and thus with cheap shipping) until you've added it to the cart, but I've made sure all the ones in my list are. I'm sure there are other bargains to be found in the likes of RAM, motherboards, etc. if you're willing to search around for a bit :)
Please make sure you're searching from the Australian portal for AUD pricing: http://www.newegg.com/global/au/
Yeah, but obviously don't get the PSU and case in the US unless you're sure you have plenty of extra room/weight in your luggage coming back.
PSU and Case are not hundreds of dollars more over here, anyway (and I think some of the cheaper US PSUs still support US 110V only, not sure?)