I am not putting this one as deal as getting stock for this one is really difficult - but posting it here as its not impossible and seeing all the prices from all the stores this is at least half the price.
http://www.officeworks.com.au/shop/officeworks/western-digit…
It was out of stock when I first checked - next day it came in stock, I was able to get one but it went out of stock just after me ordering it. I think it was a good deal - and if you want you can keep an eye on it!
You were very lucky to get one.