Theoretical value is no value at all.
Value is only really value if it is realised.
Value can only be realised or proven if a transaction between a buyer and seller takes place.
Therefore, by its very nature – value is ‘subjective‘ (an estimation which is belonging unto its possessor).
In other words,
…the actualised value of an object or a deal/proposal is only as much as another person is willing to pay.
However, that being said – some things are simply without value, or indeed priceless to all people.
What could you give in exchange for your life or someone you love, for example?