This is particularly useful when you want to make some gold from reselling a profitable limited stock vendor item. In order to reset a vendor’s item stock you just need to kill that vendor so when he respawns his items gets restocked. Just do the following in order to achieve this:
- Go the the vendor you want to buy items from.
- Set At War with the faction that the vendor belongs to from your characters reputation tab.
When the vendor respawns (which is very quickly), he will have the item in stock. You can make a lot of gold doing this by buying an item cheap and reselling it on AH (ie Gnomish Cloaking Device)