Macy's offers the OXO Good Grips 10-Piece Pop Container Set for $99.99. Coupon code "SALE" cuts the price to $79.99. With free shipping, that's the lowest price we could find by $20. They feature a one-button lock, airtight seal, and are stackable.
The dollar store is the most amazing place to find bargains for certain purchases. Yes, even pregnancy tests.