Haven't been able to find anything that could do this, so here is my Addon Idea. :)
An Auction Appraiser mod.
Basicly, it would function just like the Appraiser tab in Auctioneer... it would list out your sellables, let you configure stack size and how much to sell, do a quick scan to provide you a CURRENT snapshot of what already on the AH, and it would remember what pricing you used last time for any given item.
It would NOT scan the AH and store an all inclusive memory gobbling database of every auction known to man, it would NOT provide any functionality outside of the appraiser tab, it would NOT modify game tooltips, it would NOT do anything else Auctioneer can do outside of the Appraiser tab. :)
Basicly, I love the Appraiser tab in Auctioneer, and would love a way to use it without all the bloated crap that has to come with it. :)