Crocs via eBay offers its Crocs Unisex Athens Flip-Flops
in Black/Black, Chocolate/Khaki, or Navy/Ocean for $19.99
with free shipping
. That's $5 under our February mention and the lowest total price we could find now by $7. They're available in men's sizes 4 to 13 and women's sizes 6 to 12, although not in all size/color combinations.