Amazon offers its Prime members the Reebok Women's Yoga True Studio Slippers in Cloud/Pink/Paperwhite or Grey for $19.97 with free shipping. (Non-members can get free shipping with orders of $35 or more; otherwise, shipping adds $5.48.) That's the lowest total price we could find by $10 and a very low price for a name brand pair of slippers. They come in sizes 5 to 11, although not in all size/color combinations.