Seagate 320gb External 2.5" Drive - $39 + shipping
Use this coupon to bring the price down to $39:
Shipping to VIC was $9.
They also have 1TB WD drives for $69 as another offer in this deal.
From the email:
All offers are strictly only available ONLINE - *NO* in store purchases.
Offers expire Midnight Friday 13th August unless sold out prior.
No rain checks, repeats or back orders accepted.
Limit one unit per customer.