It was a scam. Here is the message from a so called chriselliot@gmail.com:
Hello,
Thanks but unfortunately I can only make payment using a bank check which will be delivered to you via postal service mail , I will contact an agent that will handle the pick-up as soon as you receive the check,I also want you to know that I will be adding the payment for pick-up to the check that will be sent to you in which you will deduct your money and send the remaining balance to the agent who will be coming for the pickup,once you receive the check please proceed to cash it immediately ,
Kindly get back to me with your :
Full Name:
Full Mailing Address:
Cell Phone Number:
Agreed price to sell:
As soon as this is provided payment will be sent out to you,
Chris