For the ears

Researched a bit about earplugs and earphones that protect the ears while drowning oneself in (self-induced) rocking, but ear-damaging, music. Found out the earphones are called "isolation earphones". I still don't know how much they are sold locally, but I hope they won't cost too much. I think they are a necessity for me right now, but as usual, I'm on a tight budget... so here's hoping my JB discount card will find itself useful again.