Yeah, currently it's a bit weird that you can make multiple copies of each spell, my hope is that the spells themselves become part of the crafting recipes, because even if you don't make Fireball 1 twice, you will eventually end up with essentially useless copies of fireball 1, fireball 2, fireball 3 etc (although admittedly I do use my lower level spells, but only 2 out of my 6 copies of the ball lightning spell)