Sennheiser HD 202 MK II Professional Headphones for $19.95 shipped after promo code MFOCT12. Shipping is $1.99 for a total of $21.94 shipped. Here is a screenshot for your reference. The headphones feature an 18Hz-18kHz frequency response, 32ohm impedance, and a 3.5mm/6.3mm connector. Most places have the headphones for about $23 or more.