The lowest prices I could find this week for Seagate 2TB NAS drive. I am not sure if its a good price.
Seagate Cashback Offer only applicable when buying 2 or more NAS drives. So, $30 cashback on buying 2 Seagate NAS drives and $15 for each additional NAS drive.
http://seagatespecials.com.au/cashback/
3TB Seagate NAS Drive @ $144
http://www.msy.com.au/nsw/auburn/pc-components/5393-seagate-…
4TB Seagate NAS Drive @ $210
http://www.msy.com.au/nsw/auburn/pc-components/5394-seagate-…
And as confirmed by Seagate representative, as far as the NAS drive comes via authorised distributor channel, these drives carry 5 years limited warranty.
Personally I'd pay the extra and get a WD Red but that's just me