If you are satisfied with the amount of money Microsoft is willing to pay you, go ahead and buy the Windows Phone or tablet, mail in your trade to Clover Wireless within 30 days with proof of purchase, and you will receive an appropriately valued Visa prepaid card in the mail.
Don't expect any miracles here. Microsoft is paying top dollar to the latest devices with the most native storage. A 64GB Apple iPhone 5 brings $265 while a 64GB Samsung Galaxy S4 fetches $275. An HTC Rhyme gets nothing in trade.
For those who really, really, really have their heart set on a new Windows Phone model and have an iPhone or more recent Android device that you don't mind trading in, why not get some money back for a handset that would otherwise just be collecting dust?
source: Microsoft via ZDNet