Finish Line offers the Nike Women's Dual Fusion 2 Running Shoes in three colors (Cool Grey/Gamma Blue/Club Pink pictured) for $49.98 plus $5.49 for shipping. That's tied with our January mention and the lowest total price we could find by a buck, although several stores charge beyond $60. They're available in sizes 5.5 to 11, although not in all size/color combinations.
Zappos offers the Nike Men's Roshe Running Shoes in Dark Loden (pictured) or Team Red for $51.99 with free shipping. (Use the dropdown menu to see these discounted prices.) That's $4 under our mention from a week ago and the lowest total price we could find now by $18. They're available in sizes 6 to 15.