Word to Barneys', Nordstrom, Neiman, eBay shoppers : I hear this is a thing (haven't used it)
http://www.ebates.com/For the rest of Cyber Monday (today) it's double cash back so Barneys' and Nordstrom is at 10% cash back, Neiman 12%. Like I said haven't used it but probably worth checking out if you plan to buy from those places