They've been 50 stones consistently since the price went back up. They had 2 elder kais when they cost 40 stones too iirc.Well, JP didn't get the orbs until relatively recently. They seem to do either 40 stones, or 50 stones with 2 elder kais right now.
Also this app update is where JP got the orb system update but we didn't get it lmao. fucking akatsuki, man. What a total shit-tier company.