Amazon offers Prime members the Reebok Women's TrainFusion Nine 2.0 Training Shoes
in Black, Cloud Grey, or Mist with prices starting from $27.21
with free shipping
. (Non-members can spend $49 to bag free shipping; otherwise, it adds $5.48.) That's the lowest total price we could find by $17, excluding the below mentions. They're available in sizes 5 to 11, although not in all size/color combinations.
A close price: Academy Sports
offers them in Black for $29.99 with free shipping. 6pm via Amazon
also has a few more sizes and colors for this price with free shipping for Prime members.