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I am slightly concerned that COTD page says that it's 12 months manufacturer warranty. As far as I know, Samsung has 2 years warranty policy on smartphones, at least according to the warranty card, downloadable, on Warranty Information page on Samsung website.
Other than that, I think it's a reasonable price for Galaxy S5 (Australian Stock) (Though I suppose it can get discounted more after the release of Galaxy S6)
It must not be delivered to a PO Box, according to COTD.
Shipping to Canberra was $9.95.
Specs (From COTD and GSMArena)
Colour: White/Blue
Unlocked and ready to use on Australian 3G/4G networks
5.1” full HD Super AMOLED screen
2.5GHz quad-core processor
16GB internal storage
2GB RAM
Runs Android 4.4.2 KitKat
Li-Ion 2800 mAh battery (Removable battery)
microSD, up to 128 GB
IP67 rating: Provides ingress protection against dust and water to a maximum of 1 metre for up to 30 minutes.
If you are fine with grey imports, $479 + $40 postage at Shopping Square. Full Credits to Shonky
EDIT: Not sure what to make of this response from COTD.
When you purchase from us, above all else, we value you, our customer, and want to make your experience with our website the best online shopping experience possible. If something goes wrong with your product, you should always contact us and we will do whatever we can to help. Please read the terms and conditions below that fully outline your warranty rights.
The Australian Consumer Law provides certain guarantees to consumers when they purchase goods and these guarantees cannot be excluded, restricted or modified. These consumer guarantees are different to, and separate from, this warranty, which is given voluntarily by the Warrantor. The time limit of consumer guarantees varies depending on the price and quality of the goods and may extend beyond this warranty or any applicable warranty provided by the manufacturer of the goods.
If it's aussie stock it'll be 2 years warranty.