The more I thought about the question, the more I thought that it was less a question about the specific cEV and more a question about the valuation of certain stack sizes, which is a concept that's been argued, discussed, and disected since the dawn of tournament poker. Kind of the equivilent of asking “What's the meaning of life?” or something.

I'm going to try not to ramble forever, since there's like a gazillion different things that would go into estimating the value of a certain stack.  But I did have a couple thoughts that I thought might interest at least a few people.

First, it seems to me that there might be certain inflection points where stacks jump in value…fold equity with preflop shoves, ability to play postflop, ability to 3B light, etc.

So with this in mind, my original thought was that its fine to fold here since the structure was really slow (20 min levels), but now I am thinking I should be jamming this because taking the blinds would probably cost me any re-shove fold equity, which would be a disaster.

And if these inflection points DO exist, then there are probably times where negative chip EV plays are actually positive $ EV.  I think bigdog's 43o hand in the Big 109 video is sort of an example of this (even thought it was pretty much break even chip EV).