I wouldn't call that "a heck of a deal"; a reasonable price is more like it. This lens will mount and work on your camera with the following caveats: Manual mode only, no scene modes, no AF (which I'm sure you already knew), and aperture must be adjusted via the aperture ring on the lens, NOT through the camera body. The so-called "macro" aspect is only 2:1 or 2.5:1, so it's not actually a true macro lens (which would be 1:1), but rather a closer-than-normal-focusing zoom. The Vivitar Series 1 lenses were decent, but probably no better (especially in terms of flare and CA) than a kit lens with the exception of build-quality. This thing is built like a tank, and would make a great weapon if you were mugged.
In short, if you already have the 55-200, this probably isn't much of an improvement except for the extra stop you gain, but for $100, it's not a bad deal.