WoWInterface - Price Creator

Hey,

The title might be wrong but I'll explain what I mean :) I'm wanting a way of calculating prices, for enchantments in my case, to sell to other players. I found this list
http://www.crimson-eagles.org/prof_recipes.php (components pages)
and think that the mod could use the prices from this list as they seem average prices, also based on my own working out of averages/drop rates etc. Below I have tried to explain what I mean, with some very basic diagrams.
Just imagine all the [ ]'s as boxes for the icons and the {}'s for boxes to type in :)

I'll use enchanting as an example since thats the skill I have.
I'm thinking of a list of reagents with the price alongside, and either;

click&drag reagents into an 'adding' box for a total
eg
main Price Creator window - listing reagents, maybe a drop menu to select profession
Things in the []'s are part of the MOD, maybe the [price] could be changable at a later date, not to worry about that right now though.

[dust] [5s]
[essence] [2s]
[gem] [1g]

the 'adding' box - empty listings, blank boxes to drag reagents needed from the main window, with a box next to that where you can type in the number needed.

[dust] (dragged from list) {amount needed} [total for dust]
[essence] (dragged from list) {amount needed} [total for essence]
[gem] (dragged from list) {amount needed} [total for gems]
[Total for enchant]

Not sure what the max number of reagents for anything is though..

or;

Just a long list of the reagents (again maybe a drop menu for profession) with a blank box to type the number needed, a 'total box' at the bottom, and maybe a 'calculate' button?
eg
[dust] [5s] {amount needed}
[essence] [2s] {amount needed}
[gem] [1g] {amount needed}
[Total]

I prefer the first choice as it'd prolly be less cluttered though.

Not sure how possible this is, but as I said if I had the knowledge I would use the prices from the pre-mentioned site and put those into the MOD so that it's all there.

If anyone has any idea about how to do this, or even better can! Then please give it a go, I've spoken to a few people who think it'd be a good idea and might standardise some of those ridiculous prices out there :)