I got a pair of Auvio earphones from a friend who'd been to America , great earphones , but same as the Sony ones mentioned at the start , the right one stopped working. But they lasted for about 4 months until that happened. Great sound quality , and completely sound blocking , as they went in to your earhole , not just resting on the outside as the others do.
They looked like this (pretty cool if you ask me):
And my friend told me she got them for only 10$! So , great price if you can buy them online , I'd suggest them if you dont have much money to spend on earphones , and need a few due to musical cravings in public places