Several years back, on my way to lecture at the annual meeting of the state medical society in Wenatchee, Washington, I stopped in Cashmere and took a tour of a Treetop apple processing facility. This area is ground zero for apple production in Washington.
I recall that they had several ways of grading apples for sale. At the very top were apples of a particular type, size, shape and appearance that were shipped by air to Japan to be sold individually as gifts. Then came various grades for sale to grocery stores, then came institutional and restaurant whole apple sales, then came apples for pies and other food products using sliced or diced apples, then at the bottom were apples used for juice, applesauce and puree. Apple pomace, pulp, cores and skins were sold for animal and livestock feed. I was impressed with how they found a use for pretty much every apple.