After posting about Apple's PowerON partnership for trade-ins, I was contacted by several parties who hoped I could give their services a mention (all prices are USD).
Sarah Hahn of Allison PR represents Glyde, a service she says pays out up to $460 for a 64GB 4S versus the max $345 available through PowerON. That's a huge difference, and we recommend caution when dealing with any vendor whose prices seem too good to be true.
Ashley Halberstadt of Blast Media points to NextWorth, which offers both cash and gift-card trade-in options. Their price lock guarantee will extend through Octob
