Yugster offers the iBoost Ultra Thin Wireless Keyboard and Optical Mouse for $14.97. Coupon code "FreeYugBuck" cuts it to $13.97. With $4 for shipping, that's the lowest total price we could find by $5. It features a Nano wireless receiver, 2.4Ghz radio frequency, and 104-key layout.
The countdown timer on the product page does not reflect an actual expiration time and resets daily.