The milspec is a good 1911. It should only run you $650 or so. I have owned one and it was a good pistol.
+1, no reason that the Mil-Spec should be $750, that's way too high on that model. At that price point I'd be looking at a Sig, Springfield Loaded, or Remington. The upgraded sights alone on these models is worth the extra few bucks, GI style sights are not too great and are costly to upgrade/replace.