I wanted to bump up this thread. Perhaps it should be renamed "2015 through 2017 Discount codes."
As of today (Oct. 20, 2016), Ison's Nursery of Georgia is running a coupon for 15% off your total order.
Ison is the authority on muscadines. They also carry an excellent variety of Asian plums and rabbiteye blueberries well-suited for the humid Eastern U.S., among other things.
Coupon code is: "EARLYBIRD15."