Sennheiser HD 202 II Professional Headphones for $15.95 Shipped
Sennheiser HD 202 II Professional Headphones for $15.95 shipped after promo code EMCARAP23. Here is a screenshot for reference. The headphones feature 32ohm impedance, 18Hz to 18kHz frequency response, and 3.5mm/6.3mm connector. Most places have the headphones for over $20.
2 very similar deals were also reported by some other sources: