$150 is a lil steep even for a 3gs now a times, I been sellin them from $75-$130 depending on unlocked jailbreaked n cond. of course... jus an fyi but mayb try ebay u always get the most on there
I'm guaranteed $121 from gazelle.com which means they're gonna retail it for more than that. The phone is in mint condition as our old one was replaced by apple under warranty 2 months ago.