newegg offers the Timbuk2 Laptop Case for Apple MacBook Air in Black/Gunmetal Crater, model no. 393-11N-6023, for $19.99. Coupon code "72HRSL067" cuts it to $9.99. With free shipping, that's the lowest total price we could find by $19. It measures approximately 12" x 8" x 1" and features ballistic nylon and perforated EVA for ventilation. Coupon expires June 27.