Good deals on US Mills Cereals at Amazon with an additional 5% off with promo code USMILLSI, valid through 3/31.  Here is a screenshot for reference.  Shipping is free on orders over $25.  Save an additional 15% with Subscribe & Save plus free shipping as shown in this screenshot.  The subscription can be canceled at any time.  Prices listed below reflect only the 5% discount before the additional Subscribe & Save savings.

• U.S. Mills Uncle Sam Cereal, Original, 10-Ounce Boxes (6-Pack) for $15.34
• New Morning Original Oatios, Family Size, Organic, 15-Ounce Boxes (4-Pack) for $17.07
• Erewhon Crispy Brown Rice with Mixed Berries, 10-Ounce Boxes (6-Pack) for $21.28
• Erewhon Strawberry Crisp Cereal, Gluten Free, Organic, 11.5-Ounce Boxes (6-Pack) for $21.28