For in-store pickup only, Kmart offers the Rubbermaid 12-Piece Lock-It Set, model no. 32413011, for $12.59. That's $5 off and the lowest price we could find. It includes six containers in a variety of sizes with matching lids.
Of note, Shop Your Way Rewards members will earn a Kmart credit with this purchase and may be eligible for additional credits and discounts.