Meritline offers these In-Ear Earphones in Black for $2.99. Coupon code "MLCK119TNL1" drops it to 99 cents. With free shipping, that's the lowest total price we could find for a basic pair of earphones by a buck, although we saw a similar pair for a few cents less two weeks ago (since expired). They feature a 3.5mm plug and a total length of 36".

Expect this item to take two to three weeks to arrive.