The "elite student in music room 2" turns out to be Haruki's delinquent classmate, Kazusa Touma.  With his characteristic pushiness, he tries to get her to join the light music club.  But his pushiness backfires, and only makes her more annoyed.  Setsuna gets irritated... no, involved, and approaches Kazusa secretly.
It actually didn't even cost 
1,000 yen all together.
Das hat alles zusammen 
nicht mal 1.000 Yen gekostet.
De hecho todo junto no hace ni 1,000 yenes.
La verdad es que todo junto 
no cuesta ni mil yenes.
en fait, le tout a coûté 
moins de mille yens.
Na verdade não foram nem 1.000 ienes no total.