Walmart offers the Rubbermaid Brilliance 10-Piece Food Storage Container Set for $19.98. (Amazon charges the same with free shipping for Prime members.) Opt for in-store pickup to dodge the $5.99 shipping charge. That's tied with last week's mention and the lowest price we could find by $10. It features two 1.3-cup bowls, two 3.2-cup bowls, and one 9.6 cup bin, each with microwave-safe vented lids.