Woot offers the Sterilite Ultra-Seal 20-Piece Set, model no. 03068602, for $19.99 plus $5 for shipping. That's the lowest total price we could find by $3, although we saw it for $7 less last fall. It includes two 3-cup containers with lids, two 3.1-cup containers with lids, two 4-cup containers with lids, 4.5-cup container with lid, two 5.7-cup containers with lids, and 6.2-cup container with lid. Deal ends March 4.