Star Wars Knights of the Old Republic II: The Sith Lords/Items

Containers
Although some containers, including the remains of enemies killed, always have the same inventory, most others have somewhat random inventories which are normally determined upon first entering an area... so if you save game before entering an area and acquire nothing worthwhile afterwards, you can load game to enter and try again.

Many of the best items in the game can only be acquired from containers, so make sure to search areas thoroughly for them and kill all enemies, particularly at higher levels.

Merchants
Some merchants always have the same inventory:



However, although you can always buy some of the same items from most other merchants, most of their inventories are somewhat random and determined upon first speaking to them:


 * Droid

If you save game before speaking to a merchant and there's nothing worthwhile to buy, you can load game to try again. However, check the Appendices to ensure that there's actually a chance to buy a particular item from a particular merchant, since many of the best items in the game can only be acquired from containers.