This vac was in the catalog @ $499, then today Good Guys added a 15% off selected floor care sale of which this has also been included, so has a double discount applied. There are other Miele vacuums down about 33% but with the double discount this one is 43% off the RRP. It's the only one I could find with both discounts applied.
There is also a bonus offer of two free boxes of 4 dust bags and 2 filters (valued at $49.90) which you will need to add to the cart manually x 2 or make sure you tell the store staff to receive them.
Don't forget Cash Rewards 3.5% off
or as mentioned by doweyy in the comments: $407.80 Delivered on their eBay Store(ebay.com.au) with PENNY5