Is this a good trade on Craigslist for a iPhone 5c?

I'm trading my used fair condition galaxy note 2 att and fair condition transformer infinity with dock for a unopened white iPhone 5c unlocked att version on Craigslist. I posted the ad as a trade and people contacted me. I kinda think that if someone stole a iPhone and was trading it they would want cash for it and not trade. I know lots of stolen items go through craigslist. I'm wanting to know if my trade is less than the value of a 5c? I also want to know how do I get a nano sim from att. Can I go to the att store and get one. If so how and how long will it take? I asked for the imei number but the person took a screenshot of it being unblocked on swappa.com. I don't trust the number until I see it but if it was stolen could it be blacklisted a few days later? Is there anything else I should know? Sorry for the barrage of questions but I just have some unanswered question.

It is most likely that the seller of the iPhone 5C is going to report it stolen within a week or so of the sale, as it is highly unlikely that someone is going to go out, get the iPhone 5C so close to it's release, only to sell on Craigslist.

I would advise you to walk away from this one, as you will most likely get burned if you do buy the 5C from someone on CL at this time.