Vengeance DS is just as rare, cost $150,000 a jump,
Overlord DS larger ship tonnage wise, almost same rarity, 12 vs 13; same size crew numbers if consumables is in the price, less than 1/10th the price per jump.
I have come to conclude originally a typist added 1 to many zeros, the editors missed it , and it has been perpetuated since the numbers first published.
$400,000 a jump makes much more sense compared to other cost per jump.