Tractor Supply Co. !
I bought a 106 gallon L-shaped tank there about 2 weeks before Katrina hit New Orleans. From last year to this year, these black-painted steel tanks had gone from about $230 to over $350 (law of supply & demand), but still a lot cheaper than aluminum. I filled the transfer tank that Monday while Katrina was still pounding the Gult Coast... . good thing, too... for diesel fuel got really scarce right after.
I use a 1/2" piece of clear vinyl hose (from Home Depot) to siphon the fuel from the transfer tank to the regular truck tank. I bought an aircraft/marine filter/water remover funnel (Google Mr. Funnel) and run the fuel through the funnel filter when filling the truck tank. I don't like the look of a pump, hose, and spigot on the transfer tank.
We live about 60 feet from salt water on the Gulf of Mexico. I have a 5'ver and we evacuate any time a hurricane gets in the neighborhood. I plan to fill my transfer tank in June and keep it full until November, when I will draw it down for the non-hurricane season.
It takes about 5-10 minutes to fill the truck tank from the transfer tank, depending on how much fuel is in the truck tank. (Could go faster with a large hose, I'm sure. ) When we stop for lunch, I re-fill the truck tank while Momma is making sandwiches.
The transfer tank allows me to pick and choose the cheapest fuel I can find, plus lets me evacuate from Florida when there is no diesel fuel available. The Port of Tampa closes when a hurricane gets close, and stations will run out of diesel in our area in 2-3 days. With the transfer tank, I can get to Cleveland, if I have to.
Florida Ed