​New York, Nov 10 (IANS) Technology giant is officially selling refurbished unlocked iPhones in its online store at prices discounted by up to 15 per cent off compared to new models. According to a report in technology website The Verge, a listed refurbished rose gold 64GB iPhone 6S Plus is on sale for $589 and a silver 16GB iPhone 6S Plus is $529. Just like the new devices, Apple's refurbished phones come with a one-year warranty and include a new battery and outer shell. Apple has been selling refurbished Macs, iPads, MacBooks and Mac accessories, among other products. Apple has previously sold refurbished phones in 2007.