[ChaosSlayer]

Imagien that instead of carryign standart wares list or what layers sold to them, once a while a vendor will offer just a few pieces of some rare crafting component or other items which normaly never found on vendors.
The items will only be offered for a limited time.

The system would requre an additional Vendor table which would list "rare" items as well as a special field related to the specific merchant which will determine how many items will be randomly choosen from the list as well as reset timer.

Basicly thing of this the same way as a Loot table when item is choosen from a list of posible items. Let say timer is set to 24 hours. Every 24 horus timer fires, and chooses up X rare item from the list (X been value set how many to choose with each item having a Y % chance set for it to be selected). And adds these items to merchant regular inventory. So for next 24 hours merchant may get only 1 copy of rare Spell Scrol Z or only 3 bars of rare ore K.
If they not sold ot players before timer expires, the timer fires up and cleans up the special inventory and selects some other random items.

Just thing what a RP potential this can bring to the game. Timer reset value coudl also be set within some random boundaries like from 6 to 6 dayss to prevent players knowing for sure when timer on specific vendor will be reset. And quantaty of actual rare/special items added to inventory can warry based on set boundaries and random chance rolled.