Just got an iPhone 4 from Verizon 3 weeks ago and regret not getting the 4s; I want the nicer camera! The mgr @ Verizon wouldn't budge on the 14 day exchange policy but suggested taking out another another line on my fam plan for $10/month, paying the $200 for the 4s + the $240 for the shadow line and selling my 4 on the open market to cover the difference. Anyone have experience with this? How much could I get for an 8gb CDMA iPhone 4 on the open market? Is it even worth switching? Thanks everyone!