Yugster offers the Turtle Beach Ear Force Z11 Gaming Headset for $24.97. Coupon code "FreeYugBuck" drops them to $23.97. With $3 for shipping, that's the lowest total price we could find by $2. They feature 50mm drivers, inline volume controls, and a 3.5mm jack with PC/laptop adapter.
Note: The countdown timer on the product page does not reflect an actual expiration time and resets daily.