Value is a lens, not a ruler
Whether you think that something holds value or not - the implicit assumption is that value is an inherent property of the object. As in: an object can be 50 centimeters in height and $50 in value. However, value is actually just as much a property of 'you', the observer. The sense of value arises from the intricate interplay between the environments and your existing values. That makes sense from a biological standpoint; our brains have evolved to prioritize the perception of what's useful...