I paid $350 for this bed last year (I think, my memory gets fuzzy) and it needs a floor and some metal work (pin hole rust in random areas.)
$200 is a fair deal, looks like I'd come home with some of his other stuff too, like the clip! It does appear from the photo that the bedsides may have rolled under the bed a little. As long as it didn't crease, it should pull back out. That many not be the case, just what it looks like from a small crappy photo.