Does radioshack buy used iphones?

I have a 16 gb iphone 4s that I want to sell. It has no scratches or cracks and works perfectly fine. I was wondering if Radioshack bought iphones. I don't trust online sites such as amazon, gazelle, ebay, etc. No matter how "safe" they actually are (I'm just really skeptical about online buying and selling).

So, in your mind, your brain, the intelligent side of your personality, it is logical to ask here rather than to call any Radio Shack, yes, two separate words and both must be capitalized as per rules of English grammar, and ask directly? This reflects no too much of an intent to sell anything. Same rules of grammar apply to Amazon, Gazelle, Ebay, etc. Myself, I'm totally skeptical as to teens using English grammar rules. Totally.