Update: The deal is back, this time from a different seller buydig.
New top-of-the line smartphones naturally come down in price over time, but the Galaxy S4 has shown a remarkable tendency to go on sale early and often. This time it's on eBay for $575, which is $25 less than last time. Not bad for a device that usually sells for nearly $700 unlocked.
This is the unlocked 16GB version of the device, meaning no LTE. You're limited to HSPA+ 850 / 900 / 1900 / 2100. Those on CDMA carriers won't be able to use this particular device at all.