As mentioned before each user is limited in their choice of spells based on their classes. A class determines how much an user has to pay to unlock a spell slot. In the class descriptions 1x means that the regular price has to be paid which is listed below. Some classes are proficient in certain types of spells and only pay 0.5x of the regular price for spell of that type which is half. Some classes allow users to do other types of spells as well but since the user is not that proficient in them they pay 2x or 3x the regular price.
D-Rank Spell Price: 100,000J
C-Rank Spell Price: 200,000J
B-Rank Spell Price: 300,000J
A-Rank Spell Price: 400,000J
S-Rank Spell Price: 500,000J
Kay so the question is, are we buying spell slots for specific types of spells listed in our classes?
For example: A battle mage pays 50,000 for an offensive type spell slot.
Or does it work in some other way?