My wife wanted one of these the other day, but I checked OzBargain and told her to wait until the price started with a 4!
The Good Guys are selling selected colours of the KitchenAid KSM160 on sale for $499. Other colours are still selling around the $700 mark.
The Good Guys are also running an online-only promo for $50 store credit when you spend between $300 and $499 - see https://thegoodguys.sirv.com/Content/2020FY/Terms/wk41/onlin… for T&Cs.
There is also a bonus Sifter and Scale Attachment (selling ~$185 elsewhere) available from KitchenAid via redemption.
For those of you who don't have access to the The Good Guys, Harvey Norman are also selling selected colours at $499 https://www.harveynorman.com.au/kitchenaid-ksm160-artisan-st…. This still includes the Scaler and Sifter attachment (via redemption).
Don't forget Cashback or discounted Gift Cards to reduce the price even further. In the end we managed to get ours for $448 (Click and Collect) with $50 store credit!
Hey OP's wife, there's a deal on OzBargain for one of these starting with a 4!