I received this mailing today also...couldn't for the life of me figure out what it was for. The envelope was unlabeled and there was no letter inside. I went as far as calling Dish to find out what was up. Of course, they were clueless ("All our coupons are for $3.99. Those must be for some other provider". I received five coupons, and I owned two 7100s for several years.
Bob
Bob