There is said to be demand for a good if a consumer is ready and willing to buy product

That statement is true.

Explanation:

In business, demands represent's the customers' need and desire to purchase a certain product at a certain price level.

In the free market economy, Customers' demand will determine the actions that will be taken by the producer. If the producer able to provide that product at an acceptable price level, the customers will buy it. If not, than the customers will find an alternative for that product.

"There is said to be demand for a good if a consumer is ready and willing to buy product"

true