Why not try hitting up Shiekh for a pair of the Women's Roshe Challenge Red? It's like the sport red but only difference is the swoosh is white instead of gray.
Nah NDC just puts stuff online whenever they feel like it. No rumors on anything related to NDC really besides ID's. Besides, why cop from NDC when Zappos got 1 day shipping and a fair amount of colorways? :D
Heads up on calling Zappos. They do not have a history of the price ever being 50 dollars. It may take multiple tries but they price match within 10 days.