Hi, I don't know what it's worth but a question that comes to mind is: Is it the ED version?
If it is ED, this would improve the view and put up the cost.
I have the ED version myself and really like it but I use HDF eyepieces which are much better than the HR ones. A lot better to my eye. If you do buy it I would recommend that you sell the HR e/p and get an HDF one.
Great little scope if you don't mind it not being waterproof. And it's lighter weight than the newer MM3.
Good luck.