I'm just starting an addon that will let you view, well anything you want regarding sales and guild stores.
I finished the data collection, sort and organize using ALL the MM cached data.
This will give you the ability to see all sales from a guild, user, item, etc..
Guilds can get an accurate list of sales per memeber.
The database is created an put in memory now I have to figure out how to present it.
I assume people want to sort and filter by guild,item,player,buyer,... (any other ideas get them in before I start the GUI).
-d