Right now you can get the Original Apple Smart Cover for iPad 2, 3 or 4 for $15.98 Shipped (Retail $40).
Description:
The slim, yet sturdy Smart Cover protects your iPad screen without covering up its durable aluminum back. So your iPad still looks and feels like an iPad — just with a little extra protection.
The Smart Cover is made of polyurethane and features a soft, color-matched microfiber lining that helps keep your display clean, all while doubling as a keyboard stand. Fold it back to tilt iPad into a comfortable writing position.
Open the Smart Cover, and iPad magically wakes up. Close it, and iPad automatically goes to sleep.
For more bargains check out the Retail Deals Page.