Talking about buying, yeah, I bought another pair of Philips SBC9630 earphones yesterday for Rs. 50.
For some strange reason, maybe because of the angle I sleep in or maybe because of the way I wear my shoulder strap of my T-Sonic 610, all my earphones start developing issues in the right ear after some months. My Walkman earphone's right bud is lower than left in volume, with the difference gradually increasing but I stopped it by stopping to use it, and my Philips SBC9630 earphones become deaf in the right ear after 4 months.