eBay Daily Deals is offering an Apple iPhone 4S 16GB Factory Unlocked in black or white for only $499 with free shipping.  An unlocked 4S from Apple costs $550.

Siri intelligent assistant.
Ask Siri to make calls, send texts, set reminders, and more. Just talk the way you talk. Siri understands what you say and knows what you mean.

3.5-inch Retina display.
Everything you see and do on iPhone 4S looks amazing. That’s because the Retina display’s pixel density is so high, your eye is unable to distinguish individual pixels.

8MP iSight camera with HD video recording
Advanced optics, a custom lens, and an 8-megapixel sensor let you capture high-quality photos. And you can shoot beautiful movies in full 1080p HD.