Robert sells Fiji, Granny Smith, and Red Delicious apples at his general store. There has recently been a worm infestation and some of Robert’s apples have gotten rotten. His total apple crop is made up where $30\%$ are Fiji, $20\%$ are Granny Smith, and $50\%$ are Red Delicious. Of Robert's total crop, $40\%$ of Fiji apples are rotten, $20\%$ of Granny Smith apples are rotten, and $40\%$ of Red Delicious apples are rotten.
If rotten apples sell for half the price of fresh apples, approximately how much MORE money can Robert make from selling fresh apples than from selling rotten apples?