> LTO-10 30TB: $259–$300 per cartridge (~$8.63–$10/TB) LTO-10 40TB: $491–$555 per cartridge (~$12.28–$13.88/TB) LTO-9 18TB: $92–$129 per cartridge (~$5.14–$7.17/TB)

Just a note: do NOT buy LTO-10 right now. The capacity increase is not worth the price bump, and the drives are still very new. There are still no half-height drives for tape libraries available, for example.