(info dump ) items and demon, summon prices (no bijuu the bijuu are not real demons)

Moryo 100,000

Satori

Satori is a demonic bird-like creature that appears in the Naruto: Shippuden film, Naruto 5: Blood Prison 50,000 points

roen-40,000

Demon Shinki- 35,000

This seed was created by Shinga and was once sealed in the Konoha Sealed Hall.

When used by Shinga, it becomes a big tree, rapidly sucking out chakra from everyone within its vicinity and giving it to its master. The seed can be used as a recovery to give its master near immortality and infinite chakra. 

Samehada 6,000

Zero tailed slug 30,000

(Shadow Arms)

Ultimate Summoning Beast- 9575 points by

Shiromari is a chameleon summon that took the form of a castle and the personal summon of Kōza Kubisaki.- 7000 points

Snake summon contract 2700 points

Black salamander poison sack(used in organ transplants) 500 points

stone of gelel 7800 points

Hero water 5000 no side effect

hanzo's salamander summon 2000

hanzo's kamma 1000

madara's gunbai 1400

hidans sythe 600

kusanagi sword 1100

chakra knife 300

chakra pill 25 points

eight tails horn 15'000

( I'll add more to these lists as I do research to be honest I'm really mostly focused on ninjustu and items from villians because the villians are always so powerful well at least till the protagonist shows up and to be honest these info dumps are more for me to remember so I don't fuck the story up)