I would be all about getting some 55 gallon drums filled at those prices.

Weld up a rack for one of the drums tilted sideways, the small bung on those is 3/4" female pipe thread right? I am finding gas nozzle, filter and hoses on amazon for pretty reasonable prices. The filter is maybe not entirely necessary, but is a good excuse for buying some of those inline filter assemblies which have "alternative uses", like the WIX 24003.

I am thinking two drums upright on the ground, one about six feet high and sideways with the large bung up as the filler station. Safety shutoff ball valve on the small hole at the bottom, short length of hose, the filter, then more hose, then the pump nozzle (only around $50 for the same basic thing they use as gas stations). It is around $140-$160ish in parts, plus a drum which is cheap if you know where to hustle them for reasonable prices.

A hand pump for transferring fuel from the ground drums to the filling drum, which never gets quite topped off but is periodically filled through the upper bung.

Am I missing something on this? Seems pretty simple, and the cost of building it is all recovered fairly quickly when fuel prices recover.

They talk about short storage life on modern gasoline, but even if I store two months worth and rotate it, I am holding a fair amount of fuel and nowhere near the danger point of contamination even on the six month thing, and fuel stabilizer seems fairly cheap.