 A new blockbuster deal could shake up the department store marketplace. This really would be a mega merger in the world of retail. The Wall Street Journal is reporting that the parent company of Saks Fifth Avenue will buy its rival luxury retailer Neiman Marcus in a deal worth nearly $2.7 billion. This would create a new company called Saks Global. An unexpected partner in this deal will be none other than the online retail titan Amazon. ABC's Elizabeth Schulze.