You're almost there Mornelth. Take a look at these:
It is better to use the term utility instead of value, as using value by itself implies we are measuring in dollars (or other currency units) which we are not. Instead we are simply trying to quantify how usful the chips are to us.
With Delta ChipStack we mean the difference between our stack and our opponent's stack (or the median stack at the table), measured in big blind increments, which equals the current min bet size. Note, we are NOT measuring in dollars, not even in chip units, but in BIG BLINDS!!!
This give us:
Both charts assume a skilful player. Although, for these charts never mind the X and Y scales, as they will vary with the skill of the player depending on both his playing skill relative the blinds and the stack of his opponents.
Oh, and as for measuring your chip stack in dollars, it's totally meaningless. It's your final placement that are worth something in monies, not the maximum number of chips you manage to gather at any stage during the tourney. No matter if we measure in dollars or chip units, which we are not. This is no different than how it works in any other competition, like a 100 meter dash or a tennis tourney. You win money according to how you place, not according to number of points, games or sets you win, nor how many 1/100 of a second you beat your opponents with.
And that is all I am going to say about that...