Groupon offers the Aduro SoftTouch MacBook Keyboard Cover 2-Pack in five colors (Black pictured) for $7.99 plus $3.99 for shipping. That's $22 off list and the lowest total price we could find. These soft silicone covers fit 13", 15", and 17" MacBooks Pro and 13" MacBooks Air. Each set (except clear) contains one solid color cover and one chevron patterned cover.