Alan - Walmart is the better choice. Even three years ago it was only desperation that would see me going into a Walmart but it's become a big favorite for me now, maybe due to a big, new, store.
Terri - I'd never turn down a beautiful plant just because it's a NOID. Life is too short to be consumed by having a name for every plant. Clematises are so easy for determining pruning. Right now, a big flowered clem will be a class 2. Don't oversleep tomorrow!