Sennheiser OMX60 Ergonomic Earbuds for $18.99. Shipping is free on orders over $25. If needed, use this Filler Tool to pad the order to qualify for free shipping. Here is a screenshot for your reference. It features an integrated volume control, Basswind system, 18Hz to 21kHz frequency response, and 114dB sensitivity. Most places have it for about $29.