MatLoc
An advanced collection of known vendors for the Mats you seek!
Controls
By default you see the Vendor's Name, and their location. By holding SHIFT you can view the Vendor's Name, and their Role (i.e. Trade Supplies). While hovering over the item, by clicking Left Control (Back) and Left Alt (Forward) you can cycle through the different pages of Vendors granted there are multiple pages
Known Issues
Some of the Vendor Names have become corrupt/missing due to the some of the code used, come the next WoW update I will aim to fix this, hopefully it will not cause any major issues as they still state the location.
If you find any other errors or things you don't think are right, just comment explaining the problem or send me a PM if you feel that it is urgent.
Most Annoyingly
This is NOT a bug in MY code, this always happens as it is appears to be apart of WoW code. Basically if you cycle the page and you are in the Profession's Tab look at Mats, it will NOT update but if you move off of it then back it it will cycle.