PCCG have NEVER been cheaper than MSY.
There is always $10 extra at least on most items. Rarely have I seen prices the same @ both places.
Postage costs whatever it costs, certainly not free. Just create and account and you'll see what stuff costs once you add to your cart, like most online places.
The site auto calculates it based on the size, weight, if you want express etc etc. Quite a good functional system.
None of the Aussie Distro's are passing on the price saving though. Typical price gouging of the market, it's been that way for a while now.
You can actually order stuff out of the US cheaper at the moment if you are willing to wait - and when I say cheaper, you can save a good $50 and that's after postage sometimes on a $300 item.
So overall if you ordered a new build from the US, delivered (no case, just smaller parts) I'd be surprised if there isn't a good $300 AUD in it.
I've gotta do a few builds soon so I'll be looking into that