When get a Chaos Lamp, 90% of the time to an average Chaos Lamp opener will get low value items such as 50 Return Stones, 50 level 3 HP pots, and similar objects. 10% of the time they will get something good (for example, an Astral Bike or a map part). You can sell these Chaos Lamps to players for over 300,000 Alz (recommended) or to a local NPC shop for a 250,000 Alz. Do not buy Chaos Lamps for 400,000 Alz.