for some reason (website glitch maybe??) the TIV value of the iPone 4S, for AT&T only, went from $210 to $290 today. Verizon and sprint still $210. I hopped on tht the second I noticed!
$290 + 50% bonus = $435.
$435. For a 2 year old iPhone. With zero hassle.
It was 290 yesterday as well.
Don't recall seeing it @210 though..