SOLD BY FLOOR BLOCK, NOT BY CLEAR
Data centre
JobLevels, gear and raid slots are per job.
How it is delivered
A deep dungeon is not one run, it is a hundred or two hundred floors in sets of ten with a save between them. So these are priced by the block people actually buy: the first fifty of Palace of the Dead, or the deep floors after it where the rewards are.
Palace of the Dead is the fastest route to a few specific rewards and a solo levelling option. Eureka Orthos is the current one and goes deepest. The criterion dungeons are small-group savage content with their own drops. Picking by the reward you want is usually cheaper than picking by whichever sounds hardest.