Amazon offers its Prime members the Plano XXL Wheeled Storage Box in Camo, model no. 1819, for $19.99 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $11.79.) That's $25 off list and the lowest total price we could find. It features four latches, three padlock tabs, grooves for stacking, tie-down brackets, and recessed handles.