Drake went ahead and paid the rental fee for the armor.
Each Arm guard and leg guard went for Ten thousand units, the upper-body armor went for Fifty thousand Credit Units and the cloak went for Twenty thousand Credit Units. As for the Black Scorpion it also went for Ten thousand Credit Units.
All in all Drake had rented the whole set for 120,000 Credit Units.
Now that Drake was not in the academy the currency was Credit Units.
Back in the academy, Drake had tried asking around and found that each 1 Mage point from Alpha academy was worth 1,000 Units. But exchanging Credit Units for Mage points was frowned upon by Alpha Academy. So finding a broker to change the currency for you was a hard endeavor.
Also, most students of Alpha academy would not exchange Mage points for Credit Units. Since getting Mage points was very hard and most of the things they needed as mages could only be found in the academy. And they needed Mage Points to buy anything in the academy.