If the price of electricity doubles in three years, are you getting back double the energy when you pay that higher price? Of course you are not, so if you introduce an adjustment for future price changes, you are only fooling yourself.

As far as thinking the EROEI is irrelevant, what if you did this price estimated analysis and it showed you how to pick an alternative that would cost half initially and keep your freezer running after permanent blackouts? Would not the analysis have been relevant? The whole point of EROEI estimates is to help conserve resources by using them in the most wise manner. Just looking at the benefit (keeping your freezer running) without looking at the cost can result in poor choices in using up resources today. And in a world with limited resources, if you remove from the resource base twice what you needed to remove (even if you are willing to pay the money price) then the excess you remove is not available to someone else so your considering EROEI to be irrelevant could deny someone else having a freezer running in the blackout future your anticipate.