Walmart offers the Mainstays Modular Storage Double Cube 2-Pack
in Black, model no. 7620196W, for $29.96
. Shipping adds $7.97
, or choose free Site-to-Store. Even with shipping, that's $8 off and the lowest total price we could find. Sales tax is added where applicable. These cubes measure 30"x15"x11.8", and can be used in horizontal or vertical positions.