Harvey Norman Albury currently have plenty of stock of Western Digital Essential 2TB USB 3.0 HDD for $128. This price was labelled as the normal ticket price on the box however a StaticICE search returns a cheapest price of $135.55 excluding shipping.
HDD prices are expected to skyrocket now due to the flooding of WD's manufacturing plants. I believe this is the best price you will get for a while.
I bought 2 drives and paid cash so I negotiated with the salesman and he knocked the price down to $120 each. I can upload a receipt if required.
I was just about to post that Officeworks has (had) these for $124 last week at standard pricing (they were $114 a bit before that). Further checking shows that they've upped them to $159 now. Prices are only going to go up for a while.