Crocs via eBay offers the Crocs Unisex Specialist Vent Clogs in White for $12.99 with free shipping. That's tied with our mention from a week ago and the best price we could find by $25. They're available in most men's sizes from 2 to 13, or most women's sizes from 6 to 12.
Note: buy two pairs for the in-cart price of $22.08
Uncle Sam could take a hefty chunk of your retirement income if you botch this.