I don't think they carry the scope and barrel package anymore. What they make today is the same that the stock ones had on them though. Leatherwood still makes that scope in 3, 6 and 8x. I think they were 6x. The one I had was a good shooter. I don't know about 1000 yards like some folks can do with them, but I used to have fun with it on a 200 yard range. You can't deer hunt here with optics on a muzzleloader so I ended up getting rid of it. In hindsight I wish I hadn't.
The one I had was used so no idea on the price they sold for. Yes they are accurate. I can't remember how accurate but they compared to the knight inlines shooting their sabots on the range. Today it would cost about $500 for the barrel and scope before shipping.