Regular price of KitchenAid 6 Qt. Professional Bowl-Lift Stand Mixer is $329.99 at Costco.
There is an immediate $60 manufacturers discount valid 10/27/16 through 11/27/16. (today is the last day!)
There is also a $50 Mail In Rebate valid for orders placed November 20, 2016 through December 24, 2016

$110 discount in all.
You have to pay tax on $329.99 though.
Last day today to get both rebates.
Available though costco.com or at warehouse (rebate receipt printed at end of your receipt).
This is a professional mixer available at almost the Black Friday price of the smaller 4.5 qt mixer at WalMart .

Edit: Best Buy has a professional 5 qt mixer for $200 right now.