it's a dog of an airliner unless you ram it full of seats and fill it, just like the 340 family - which is why values have dropped through the floor
Presumably you're talking about used values for the A340, not the A380, since there have been no used sales of the latter.
That's fair comment re the A340, but you haven't provided any evidence that the comparison is valid for the A380, you're simply making an assertion.