I do not want to deal with eBay or Craigslist.
Tried Gazelle and was offered $20. What a joke!
CL and Ebay are the only ways to get the most $$$
Checked eBay and they are selling for 70-90. After fees and s&h it will be lower.
Just got an offer for $60 at iCracked, so gonna go with them.
Easiest option is craigslist. HOWEVER, make sure if you use craigslist you only meet in a public, well lit place with cameras. ie Starbucks or Tim Hortons.
I just sold a white iPhone 4 16GB Verizon for $175 about one month ago.