Did you really think you could just walk in?! You'll have to give me some adena in return for using the power.
Level 20's: 2000 adena
Level 30's: 4500 adena
Level 40's: 8000 adena
Level 50's: 12500 adena
Level 60's: 18000 adena
Level 70's: 24500 adena