To get a scope with a true range finder built into it your going to spend some money whatever you look at. Meaning one that reads out the range not estimate distance between retical cross hairs or circles.I personally have been looking at the Burris 4x12x42mm range finder scope. Scope has the Ballistic Plex or Ballistic Mil-Dot retical. Price range is between $700.00 to $900.00. But if you spend good money for a scope and range finder you will be around that range.