Woot offers Whitmor Rolling White Wire Underbed Cart for $11.99 (orig. $19.99). Free shipping for Prime Members. 

Product Description:
Whitmor's Rolling White Wire Underbed Cart is the perfect storage solution to contain clutter in a space that is usually underutilized. Great for storing shoes, clothes, or bags, this under-bed cart features wheels for quick and easy access. The elevated design of the white steel grid and heavy-duty frame allows you to store items off the floor where dust and dirt can settle so your item stay fresh. Easy to clean, just wipe with a damp cloth and towel dry. Assembled Dimensions: 24.8 x 25.25 x 6.5 inches 

• This rolling white, wire under bed cart is the perfect solution to contain clutter in a space that is usually underutilized
• The added feature of wheels allows this cart to easily roll under the bed and store clothes, shoes, or bags and keep them out of sight
• Elevated design keeps stored items off the floor where dust and dirt can settle
• Assembled Dimensions: 24. 8 x 25. 25 x 6. 5 inches
• Easy assembly, no tools required