Yes, that is an early "3-wheeler" SJ. It appears to be a C-code or later as evidenced by the cook-grate groove I think I see in the side of the bowl. Earlier code models (A and B code) had small tabs welded in to hold the cook grate up.
Value? Kind of in the eye of the beholder. I've paid as little as $10 for a couple of these I own. I've paid more for others.