Use Amazon coupon code 8VKKUUEA during checkout. Amazon has this 10-pack of Chef's Star Reusable Food Storage Containers w/ Lids for $13.99 after instant savings. Use the promo code at checkout and the price drops to $9. Shipping is free for Prime members or with orders of $49 or more. These containers are dishwasher and microwave safe. They previously sold for $29.95. This deal is available for a limited time.