You are going to clear up the cause and effect here. Volatility does not mandate higher prices. Volatility could be to the downside not always above normal. Big surpluses can drive down prices causing volatility. Volatility is also mitigated by arbitrage, with buyers buying when prices are low due to surplus and selling back into markets when supplies are low, and prices are higher dampening the volatility. If you are forecasting higher prices, you don't mean volatility, but you mean scarcity.

TEK