Amazon offers Prime members the PUMA Men's San Paulo Slide Sandals in High Risk Red or Black/Amazon/Team Yellow for $7.50 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $5.48.) That's the lowest total price we could find by $13. They're available in sizes 4 to 15 11 only, although not in all size/color combinations.