Value - it's more than the price someone is prepared to pay
It is the proposal to help a beneficiary make functional and/or non-functional progress in some aspect of their life. And it is the amount of progress made in use (co-creation of value).
That we measure value today by price paid and/or volume sold is a result of our product-dominant logic view of the world. It turns out, these are proxies we end up using as we are not relational enough. Something service-dominant logic opens our eyes up to.