Staples 3-Shelf Rolling Cart for $24.99.  Order online for in-store pickup at Staples to lock in the price and save on shipping.  Otherwise, shipping is free for Staples Reward members.  Here is a screenshot for reference. It has 6-lb. load weight capacity per shelf, rolling wheels, and measures 15.9"W x 12.5"D x 29.6"H.