There is a instant discount of $45 at the moment for these vacuums I have no idea when this price expires.
This price makes it cheaper than the good guys and masters. (As of yesterday)
Note that if your a Costco customer then you will have warranty on your product as long as you don't stop your membership.
Appliance Central has this model for $638. It looks like free shipping to most postcodes (just tried a few from vic/nsw), and you don't have to pay for a membership in order to get that price!