Walmart discounts a selection of garage and storage rollbacks, with prices starting from $12.70. Choose in-store pickup to avoid the $5.99 shipping fee, or get free shipping on orders of $35 or more. (Oversized items may have additional fees.) A couple of best bets:

Muscle Rack 5-Shelf Steel Wire Corner Shelving Unit for $27 + pickup (low by $15)

SystemBuild 36" 2-Door 2-Drawer Utility Storage Cabinet for $174.97 + $0 s&h (pictured, low by $70)