Kmart has the Rubbermaid 40 pc Storage Set on sale for $11.69 when you apply code HOMESALE10.
The set is BPA-Free, and containers are graduated in size, so they nest together for compact storage. You can choose which way you want to store the lids, either snapped neatly together, or you can opt for snapping them on to the base of the storage container.
Check your zip code for availability in your area.