Uh...the usual comments from me, but is there an option just to get the skeleton inserted and ready to animate in another program? If not you really need to add that. That way you can stipulate that people not sell your animations but they could sell models they rigged with it so long as they didn't include the actual animations. That would be important to me. I guess pacemaker can already do that, I just haven't gotten around to checking it out yet so it might just be a moot point. But anyways.
I think your price is ok.
I think your price is ok.