Use Amazon coupon code B4JOUUTJ during checkout. Amazon has this BlueFire Professional 3.5mm Over-Ear Gaming Headset for $23.99. Use the coupon code and the price drops to $16.49. Shipping is free on orders of $49 or more. Other headphones on sale after respective coupon include:

• BlueFire Professional 3.5mm Over-Ear Gaming Headset in Red – $16.49 via "2HVIHQSH"
• BlueFire Professional 3.5mm Over-Ear Gaming Headset in Green – $16.49 via "SAQTGWGB"