Welcome to Listia! You've got a few good items listed that should start you off with a nice amount of credits to play with.
Does this phone have a clear ESN ready for reactivation with Verizon? If you are uncertain, check the label (under the battery) on the phone for a number that says DEC/ESN. Enter it in at www.checkesnfree.com and it will tell you.
When you say that you don't think it has a clear ESN, do you mean that you still owe money on the account, or that it is Verizon and cannot be switched over to another provider?