IPhone 4s has Retina Display?

I'm purchasing this barely used iPhone 4S from my brother for $100.Is that a good price for iPhone 4S?

Also, does it have a Retina display? He bought it like the week after it came out.

Added (1). Also, does it have Panaroma mode with iOS 6?

Ya, the price is so less and iphone 4s has retina display.but, The Retina Display on the iPhone 4 refers to the particularly high resolution of the phone's screen. Taking pride in its ultra-sharp displays and placing a great deal of emphasis on improving the visuals with every generation, Apple delivers an unprecedented 326 pixels per inch with its iPhone 4.