ePaper has more application than eBooks for the publishing industry.  ePaper also offers solutions for the Retail Industry. ePaper can be used to show product prices and promotions in the store and on the shelves. Here are two suppliers who provide added value in the Retail Industry using "ePaper" : MariSense and ZBD.  IBM has started with ePaper in Retail in a collaboration with Marisense.

Links : http://delicious.com/appepaper/retail