Check out this Mainstays Adjustable Rolling Desk, which drops from $79 to $62.99 at Walmart.com. Plus shipping is free. Similar desks go for $150-$200 at other sites. This versatile rolling desk can expand to 72" in length when both sides are in an upright position. The center storage unit features two shelves and a drawer. It has six locking casters and comes in the pictured birch finish. Editor's note: I recently purchased a similar desk from Ikea for $200. Sales tax is charged in most states.