My headphone pads on a pair of Sony MD7506 were fraying apart, so I bought a pair of $3 replacement pads online. While I was buying those, I noticed a nice looking $30 pair made of sheepskin leather. I bought those, too and figured I'd just use the $3 pair until they inevitably wore out, and then switch to the nice ones. Well, it's been some time now and the $3 pair are apparently far more robust than their forebears. The sheepskin remain in their packaging untouched. One day..