Amazon offers the adidas Men's Adilette Slide Sandals in Blue or Black, with prices starting at $10.29. Plus, Prime members receive free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $5.48.) That's the lowest total price we could find by up to $20. The strongest discounts are available in sizes 12 to 14.

Update: Prices now start from $10.74.