I don't think they are that rare or expensive so long as you don't insist on hi-fi brand names. My Awei earbuds pair with two devices and they cost under NOK 150 (about USD 18) including shipping from China to Norway. They are not as good as my wired Sennheiser HD 595s but are plenty good enough for casual listening while on the move or working, considerably more portable, and about a tenth of the price!