Amazon offers Prime members the Torin Big Red 2-Ton Hydraulic Trolley Jack, model no. T82012, for $11.76 $12.38 $13.49 $13.07 with free shipping. (Non-members can spend $49 to qualify for free shipping; otherwise, it adds $13.41.) That's the lowest total price we could find by $6. Features include 360° swivel casters, rotating heavy duty saddle, 13" lift height, and plastic case.

Update: The price has increased to $13.03.