AGA cut charts and Fancy Shapes

You are not getting a run around. The problem is the economics of cutting to those standards when few people ask for it. The regular customer buys a diamond from a selection obtained by a jeweler. They buy the one they like the best or the one they can best afford. Now, with the cut standards, a few people ask for stones that would not weigh so much and would be larger in length and width and not so deep. Well, it isn't the way most cutters cut radiants... Not yet, at least. CUtters leave as much weight in the finished diamond as possible. If you are willing to buy a roast with lots of fat on it for $10 per pound, why cut it off and throw away the profit? A similar thing happens with diamonds. Now, expect a better cut to cost more per carat, but you will get a better diamond.

Don't give up. Ask around on the Internet and you may well find smart vendors who do have some diamnonds that will get a better AGA Cut Class grade.