180 for 3 rares is the minimum you should spend on that treasure. Now if you have gotten 3 rares already and are a free player I suggest you to save up ~200-240 seal for Roshi in Jinchuriki treasure. He is as meta as SN and Tobi right now so it can never went bad getting him

My post about saving seal for roshi got deleted yet again, they never listen ffs :curse: ROSHI WILL COME OUT IN JINCHURIKI, OASIS CAN NEVER CHANGE THAT SO THIS IS NOT CREATING CONFUSION :@ I DON'T EVEN MENTION ANY OTHER GAME VERSION STOP DELET MY POST :@
btw sorry for getting a little triggered there, yes he will come out pretty late but for a free player I dont think you can save up 200 seal scroll faster than that. Or if you actually can get up to ~800 seal spent at kage for 6 months you can try to get a super rare. Sasuke ssn and Ayy is NEVER BAD (as least for lightning main)

If oasis dont change anything then shouldn't they be in 2 different treasure?