Crocs via eBay offers its Crocs Unisex Athens Flip Flops in four colors (Navy/Ocean pictured) for $14.99 with free shipping. That's $20 off list and the lowest total price we could find, although we saw them for $5 less in December. They're available in women's sizes 5 to 12 and men's sizes 4 to 13, although not in all size/color combinations.