Ebay offers Pyrex 20-Piece Food Storage Set for $20 (reg $49.99) with free shipping.

Product Description:
With a variety of sizes (1-cup, 2-cup, 3-cup and 4-cup) in round and rectangular shapes, these versatile glass storage containers are perfect for storing everything from snacks to lunch, in your pantry, fridge or freezer. The tight-fitting BPA-free lids help keep food fresh, both at home and on the go. Made from durable, pure Pyrex glass, you can heat food in the microwave or pre-heated
oven (without the lid in the oven), and then clean in the dishwasher use after use. The containers are stain- and odor-
resistant, so they stay clean and preserve your food’s fresh flavors. Whether storing meals made ahead, or holding yummy snacks and leftovers, these glass containers are perfect for the job.

• Number of Pieces: 20
• Piece 1: 6.5 Inches (W) x 3.25 Inches (H), Quantity 2, Capacity 4 Cup
• Piece 2: 5 Inches (W) x 2.5 Inches (H), Quantity 3, Capacity 2 Cup
• Container Material: Glass
• Lid Material: Plastic
• Care & Cleaning: Oven-Safe, Dishwasher-Safe on Top-Rack, Microwave-Safe