I've got 2 of these for sale. Assembled and like new. They've been in a smoke and pet free home and only used minimally.
There are 4 tiers, 4 large bins (11.5" L x 16.5" W x 5" D) and 8 small bins (11.5" L x 8" w x 5" D). The overall dimensions are 35" H x 34" W x 12.5" D, with the bins on the rack.
Canadian Tire sells these for $160, Wal-Mart for $140, Amazon has various makes for $80-100+.