First time we ever had Sage Jiraya he was 8k in anniversary event, just now he was 2.8k, essentially price of pains so yeh his price did drop a lot.

Most sold Kage ninjas so far is Danzo for about 6k and Bee for 4k, they were this cheap since start. Chojuro and Mufin about 5k each, they were more expensive at start. Darui/Mei/Onoki only saw for 10k+, Gaara was 6k in last event, he was also more expensive at start.

Uhm Chojuro is in Time-limited Ninja recruitment event right now, for about 63 coups a frag so 5k, and Danzo was in last lucky board event for 75 coups per frag so 6k, this is third time he was in lucky board for always same price. Don't make prices up.