RE: Is it worth it?
I'd say it's a good deal. If the scope is worth $530, and everything is new, figure $650-530= $120. And if the rings and bases are a good brand, that's at least another $40. So you're getting a brand new heavy-barreled rifle for $80. There's no way you can but together a new varmint rig yourself for that cheap unless you buy a much lower quality scope. I say go for it. If you don't like it, I'd bet you part it out and make at least $100 off the whole deal.