LoL, fair value is the most bullshit concept ever invented by roman plebians and other oligarchs of the time to loot the state coffer... the only fair price, is the one paid, the rest is raw propaganda for a nefarious, vicious and ultimately destructive agenda.
Please don't fall prey to the assessors of the fair value...
I agree with the idea that the only fair price is the market price, under the assumption of perfect fluidity, liquidity and competition. Such a market is perfectly random too, that is, all the information that is to be had, is already included in the price, and hence, any form of speculation on a price increase or price decrease is a totally random guess - unless one possesses information that is not yet included in the price. This is Malkiel's efficient market hypothesis.
However, a market can also be random, without assigning optimal resources, but just "totally noisy".