@Somini
Sage Freke sells different spells than that guy. He's the advanced magic teacher, while the other one teaches basic spells. You won't be able to learn them until NG+, and you'll need them if you want to complete the Scholar Gold Trophy (All Spells + miracles learned).
Don't worry about it yet, since you can only get that trophy starting from NG+++, as there are many spells that can only be learned from Demon's Souls that have multiple uses, even though you can only choose one per NG.
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