This is the second transaction I've made with Gazelle. It could not be easier. You simply give them the condition of your product, get your price, enter a little information and that's it. The first time I used my own box since I ship from my home every day. This time, I decided to be super lazy and had Gazelle send the box and shipping label to me. All I had to do was to reset my phone to factory settings, put it in the box, put the shipping label on and hand to the mail man.
I had my payment within a couple of days. Could not be easier.