You would have a specific policy to cover your business losses. Probably with a such a hefty deductible you'd only want to claim if the place burnt to ashes.
Consignment stuff is pretty well always on the person who owns it. I am surprised he got paid anything because most 2nd hand places would have told him to take a hike.
If he ever posts the payout we can use arithmetic to see if it was "fair". I'm going to make another guess that he bought all those back when prices were high, and was selling try to recover his costs. The prices didn't reflect the current market (IE prices have been in freefall the last couple years) so he was let down by a payout that didn't see him walk away with what he though they were "worth".
Airsoft, where nothing is hurt but feelings.