This is great news, because it means
a) Sony is reading us, and
b) Sony wants to do this one right.
I don't know whose "fault" it is that the e-books are/were more expensive at Sony's store than elsewhere, but it probably doesn't matter as long as they adjust them and try to be more competitive in the future.
So Sony, if you're reading this, the next step would be to assist us in developing tools for your Reader
