Hey I am sorry that some bastard ripped you off, have had it done to me as have a heap of people on the site. It suxs and no amount of words can fix that feeling.

As for a dud, not at all. A windowless shell is a great thing. Many people are now looking for them. I know at least 3 people in QLD that would love a good clean shell.
If you need it sold this is the best place to let it be known. Most everyone on here have been more than helpful to me as a newbie, and i can bet that once the word gets out there you will be able to sell it for a good price.