Maybe there isn’t even an objective way to quantify value, even tho there’s many different kinds of values. Value is never a constant, it changes over time. Even the most stable store of value in humankind, gold, doesn’t have a fixed value, not even a market cap is ever constant. So you could ask what is real value in the first place.
I think it's important to distinguish between value and price. A piece of chocolate cake from that Michelin star has a certain amount of value to you, but perhaps the price is too high for you and so you make do with an alternative that provides similar but not exactly the same value. But something must have some value for it to deserve any price. If you assign a price to something worthless (of no value) by buying it, then you will suffer the consequences if you end up being the last one to "hold the bag."