Not free, but much cheaper than $500 for each 1.7 mwh, or barrel of oil. Solar is already cheaper than that even in cloudy Britain. EROEI is sort of irrelevant to the question of whether we'll ever "run out of oil." It might be that we'll stop using oil as a primary energy source, but that doesn't mean it'll go away.
EDIT: You might recall that the point you dismissed as "ignorant nonsense" was that we would be able to produce oil at $500/gallon, not that we would use it as a source of energy.
