No, I was trying to find an angle with lots of reflection to show the ding. There is no ding around the brake cable hole, as you can see below. If it were my size, I might have looked into fixing it, though it may be better to live with it and not have to re-paint, as the fix will surely mar the paint.
I know it's hard to value a rare, large size custom frame, let alone one with a ding. Any rough estimate? Is $500 reasonable?