Target offers FlipShelf Wide 3 Shelf Black for $19.99 (orig. $39.99).  Shipping is free with RedCard or on orders over $35.

Product Description:
FlipShelf provides effortless style and versatile storage in seconds. Don’t let the flat box fool you, FlipShelf, the superhero of shelving, transforms quickly and instantly into an organizational solution without the hassle. A great storage solution for any room in your home! Let FlipShelf help you conquer clutter and supersize your storage space. .