Samsung 16GB Class 6 Waterproof SDHC Card for $13 + free shipping
Beach Camera via eBay offers the Samsung 16GB SDHC Class 6 Secure Digital High-Capacity Memory Card, model no. MB-SSAGA/US, for $12.95 with free shipping ($0.81/GB). That's $3 under our April mention and the lowest total price we've seen for this water- and shock-proof SDHC card. (It's also a current price low for this model by $6.) Deal ends July 4.
A very similar deal was also reported by: