I know that I wouldn't need to fill it completely, but condensation is something to be concerned with. I always top off the tank (in the tractor) or run it dry (walk behind mower and weed wacker) before the winter.
My annual usage of diesel is (a real wild assed guess here) about 30 gallons, give or take. Might be a bit more if any special projects and would definitely be more if I get the PTO generator we're considering (assuming a power los, of course).
To save a fuel bucks, I'd have my fuel oil company fill the tank...but that won't be winterized fuel, obviously....so I'd be adding an additive (which I do anyway).
Anyway, unless we do buy that generator, I won't really need to keep that much fuel on hand. So, no tank purchase until after the generator purchase.
But, there are a number of TBNers in the south central and SE Pennsylvania area as well as a few in northern MD....so somebody may get use of that tank, which is why I posted the info about it.