I had that exact scope not quite two years ago - only difference was the plain mildot instead of TMR. I paid $730 shipped for an as-new, never-mounted, but previously owned scope, sent it in Leupold shortly after getting it because of dust on the reticle, and ended up reselling it a few months later for, IIRC, $700. The one I bought had been listed for at least a couple weeks, and it didn't sell instantly either, so I think those were fair prices at the time. I don't see why the value would have gone up since then. I would consider the TMR reticle more valuable, but I don't think Leupold charges any more for it than the mildot. Obviously, sell it for what you think you can get for it.