Amazon has a 3-pack of Ziploc Big Bag XXL 20-Gallon Double Zipper Storage Bags on sale for $5.98 - 5% off with Subscribe & Save - 20% off coupon (click "Clip Coupon") = $4.48 with free shipping. Get those winter clothes into storage for the summer!
Save 15% when you subscribe to 5 or more items
You must select Subscribe & Save to order Add-on Items without the $25 order minimum requirement.
http://www.amazon.com/exec/obidos/ASIN/B003U6FMOK