The number of 1.25 EPA certainly does make sense if you want to know whether you should convert your diamonds to sell stories instead of selling the diamonds directly.

The notion of "output value - input value = action value" is a formula that even found its way into the ActivitySummary template as "Raw EPA": <a rel="nofollow" class="external free" href="https://fallenlondon.wiki/wiki/Template:ActivitySummary">https://fallenlondon.wiki/wiki/Template:ActivitySummary</a>