I'm glad you are not willing to handball the ebay conjob onto someone else.
Maybe if you separate the scope and mount, you could get more for it... maybe even break the mount & motor up...
Dob scratch, bah! Who cares! There'll be plenty more where that came from, whoever buys it. But I think you should at least give the Dob a go before you resell it! It is one of the best scopes around and can show you heaps in the solar system, the milky way and beyond. Even if you spend a couple of months on collimating it, finding time to use it, etc, it will be worthwhile experience, and will give you a perspective on the universe most people will never have. And you will still be able to sell it for the same price as you'd get for it now.