Okay... i've had enough of spending 2 + hours trying to sort it out, done everything as it should be....
Added the extra ID Cost into DBC and saved it
Added the extra ID cost to the item on the vendor in vendors table.
Created an item to use as the Cost... but...
- People can STILL get the item for free?
When i try to add it via the ingame [itemid] [ammount] [extcost] i get
'Invalid Extended cost ID'
Dont understand what is up, and its really starting to anoy me.
+REP for anyone who helps