I love just straight up lying. I wish it was 1¢ per GB. Maybe the most dirt cheap Chinese off-brand that only has 1/2 of its listed capacity usable because it is a refurb labelled as new. 100€ for a 10TB is insane.
Even going higher capacity to get a lower price per GB, 10TB drives are around 300€. That is 0.03€ per GB. 20TB drives are around 525€. (These are just consumer drives too, enterprise is significantly more expensive for the MTBF ratings) Still 0.026€ per GB. Once you get into ultra high capacity, it starts going up again because of tech limitations.