GearXS via eBay offers these Men's Slip-On Pool Shoes 2-Pack
with free shipping
. That's $9 per pair, $2 below the lowest total price we could find for the same quantity of similar shoes elsewhere, and the lowest per-unit price we've seen. (For further comparison, we saw one pair for $10.) They're available in sizes 7 to 12. Deal ends July 11 at 5 pm ET.
Note: They'll be shipped in random colors.