Muji Shop via Amazon has Sound Intone Ms200 Stereo Headsets Strong Low Bass Headphones(6 colors) on sale for $16.98 - $6.99 w/promotional code T6KXKN3W=$9.98
http://www.amazon.com/Sound-Intone-Adjustable-Headphones-Smartphones/dp/B00NIBK2U6/ref=sr_1_1?ie=UTF8&keywords=headphones