Target offers the Threshold Darley 4-Cube Bookcase for $80. Coupon code "HOME10" drops it to $72. With free shipping, that's $28 off list and the lowest total price we could find. It measures 33.75" x 29.25" x 13.38". Deal ends April 16.

Update: Apply code "TGTBY2SV" to drop the price further to $67.