Price is determined by volume and volume is determined by the trader. The trader's effort is volume and the result of this effort is price. This result (price) of trader effort is displayed on our charts.

All the traders who create price are basing their opinions on what they think they see in price+volume+time in one way or another as these are the only components to the markets that there are.

An auction drives the price movements. Price moves because of an imbalance between demand and supply. Prices move higher when demand is higher. Prices move lower when supply is higher. Prices move minimally when demand and supply are close to balancing and price does not move when they are balanced.

Almost everyone will have a different estimate of value. Value is just perception, therefore prices move because of perception. Value is always changin as perceptions are always changing....