Asus Strix GTX 970 $329USD + shipping from Amazon.
Equates to roughly $435AUD delivered to sydney.
The product page also states it comes with codes for Witcher 3 and Arkham Knight. (Not sure if this applies to US residents only)
Static ice has local prices around $500.
EVGA GTX 970 Super Clocked ACX 2.0 also available for the same price as the Asus.
http://www.amazon.com/gp/product/B00NVODXR4/ref=ox_sc_sfl_ti…
I would say the redemption codes are US only, most likely download codes from Amazon digital services. No guarantee it will be a Steam code.
From the fine print: Offer expires at 11:59 p.m. (PT) June 1st, 2015.
Offer only applies to products sold and shipped by Amazon.com or digital content sold and delivered by Amazon Digital Services, Inc. (other than certain limited Kindle book titles).
Offer good while supplies last.
Items must be purchased in a single order and shipped at the same speed to a single address.
Digital content and services may only be available to customers located in the U.S. and are subject to the terms and conditions of Amazon Digital Services, Inc.