PhoneStoreUSA via eBay offers the refurbished Unlocked Samsung Galaxy S4 Active 16GB Android Smartphone in Blue (pictured) or Gray, model no. SGH-I537, for $224.99 with free shipping. That's $25 below our November mention and $5 under the lowest total price we could find for a refurb unit. In addition to being able to survive in three feet of water for up to 30 minutes, it features a 5" 1920x1080 Gorilla Glass touchscreen, Snapdragon 1.9GHz quad-core processor, 2GB RAM, 16GB memory, 8-megapixel rear camera (with an "Aqua Mode" for underwater pictures), 2-megapixel front camera, 1080p video capture, GPS, Bluetooth 4.0, 802.11n wireless, and Google Android 4.2 OS (Jelly Bean).
A 30-day warranty applies, although it is unclear who backs it.