There are many factors that can affect Commodity prices. One of the major ones is the concept of supply and demand. When supply is high and demand is low, prices for Commodities will often be lower. Conversely, when demand is high and supply is low, those much desired Commodities often become more expensive. Similarly, as we are dealing with real-world items, Commodity price charts can also be affected by poor weather conditions, as well as new trade agreements, and other geopolitical events.