I vaguely remember this, but I thought part of that was actually related to their linked AH and huge slowdowns that were happening. (There was also vague future-y talk of Blizzard devs working on a greatly improved AH interface themselves, because AH addons exist due to how antique and bad the default UI is.)
EDIT: Ah, the one I’m thinking of may have been Ythisens when they upped the fee for posting single items.