TomTop offers the Xiaomi Mi Over-Ear Headphones in Green or Orange for $37.19 with free shipping. (They're available in White for a buck more.) That's the lowest price we could find by $23. These closed-back headphones feature a frequency response of 20Hz to 40KHz.

Note: This item ships from China and may take up to three weeks to arrive. The countdown timer on the product page does not reflect an actual expiration time and resets daily.