Apparently IR already cleared it up through another inquiry.

Information from Chris

We finished Q3 with $75,891 in finished goods, which is sellable fuel on
hand. I did not put a market value on it, nor would I, as I'm not privy
to information not contained in the public filings and cannot predict at
what price we have sold or will sell fuel for in the future. I'd guess
that the $250k figure is a combination of our revenues for the quarter
with fuel that we had but did not sell.