Thanks for all of the feedback. So.. here's what I'm trying in 1.4:
-Lots of new lines on the auctioneer, said a LOT less frequently. His voice doesn't extend that far, so if you don't want to hear him, you might be able to back up and at the very least get a lot less of him.
-The background walla in the shops has been set to not loop. The files are pretty long in general (2+mins), so although some of you might miss the audio for a short amount of time, those of you that spend hours in the auction house won't have to listen to it repeat. I'm not sold on this change, but I figured I'd try it out and see what you all end up saying.
I have new audio for the Harbor Master, but I've been too swamped with new content to have time to splice it up and put it in game. It'll be in eventually.
As always, thanks for listening.