There's better...
If you go to www.gazelle.com you can get alot more money for your devices. For example, I can get over $100 for a Motorola Droid in less than perfect condition. You can calculate the value for your devices without having to start an account.
And I'm not advertising I just want others to get more than pocket change from Verizon.
I jumped ahead and didn't research enough. Gazelle.com is great for smartphones but your regular phones will have more value on Verizon's program. Gazelle won't give very much, if any, on basic phones especially old ones.
Gazelle is awesome. I use it a lot. They are dependent and they give great prices for various high-end devices. I was able to sell them the Droid a while back and get more than the retail value back from it (contract value, not full price). 20 thumbs...
(continues)
I've done well with Ebay too. When I switched from T-Mobile to Vz, Ebay got us back most of the money we spent buying new phones.