As a fellow Baylor Grad, yes I have done many things that are just the right thing to do. The OP stated that they weren't even willing to send a prepaid shipping label for him. At that point, I would have completed my time with them. Verizon is horrible... If they aren't even willing to meet you halfway, why should you go out of your way and pay by time, shipping, and handling just in the hopes you will get a refund for shipping.
I agree don't try to make money off of the device, but either give it away for free, or throw it out. But if they wont prepay for shipping with home pickup, they obviously do not want the phone back.
At no point did he say they were unwilling to ship a box and label. He said they didn't offer to send one. They also didn't offer to sell him an iPhone in the first place, he chose to buy one, yes ONE. There's 2 way to go. Be an @sshole, $hitty person, or do the right thing and return it. Don't complain that they are threatening to blacklist "your free extra phone"