I dont know if there is another mod like that, but from my point of view its kinda hard to display a average value for a Reagent for a Crafting Skill if you dont use a Tool like Auctioneer which stores avg. Item prices.
Every Server has its own econmy while at one Server Black Lotus is 5g its 30g at the other Server, so without a tool like Auctioneer it isnt really possible...
Basically all I want is to know more or less how much it's going to cost me to make something, eg. Leather pants and then for how much I could sell it. Even if it just uses the info from vendors that would be ok. It's a bit of a pain trying to figure out if it's worth spending money to craft something.
I don't mind using something like Auctioneer, as long as it's not Auctioneer. It's a great addon, but every time I install it Stubby or Enhtooltips breaks something... :( Might just be the combination of addons I'm using, might not. :)
Fizzwidget's addon can also use KC_Items, but that's not Ace2 yet. :(