Ah, 2000 cap myth... And I had the same doubt than you, well, no at all, but similar...

At the end, instead of taking books, I realized something noob, (I'm noob after all)... I thought "Hey... Why waste 13.500 myth in giving a little more of stats in the weapon of one character when I can use them all for almost i90 all the other classes?!") And that happened, starting by the bard...

Maybe you could try buying some piece for any other class you remotelly want to level up someday? It will always be better than no receive more myth...