Amazon.com offers the Fiber One Bran Cereal 16.2-oz. Box 6-Pack for $9.95 with free shipping via the directions below. That's tied with our mention from two weeks ago and $15 under the lowest total price we could find for this quantity elsewhere. Coupon expires January 31. To get this deal:
Fiber One Bran Cereal, 16.2-Ounce Boxes (Pack of 6): Amazon.com: Grocery & Gourmet Food
1. View the Fiber One Bran Cereal 16.2-oz. Box 6-Pack for $14.21
2. add it to your cart via Subscribe & Save to drop it to $12.08 and bag free shipping
3. coupon code "BIGGNYNY" yields a final price of $9.95
Cancel Subscribe & Save after your order arrives (it's easy to cancel) or you'll be billed for subsequent shipments.
Update: Amazon.com also has the Fiber One Caramel Delight Cereal 15.6-oz. Box 4-Pack for $6.72 with free shipping after the above coupon and Subscribe & Save. The Fiber One Raisin Bran Clusters 17.25-oz. Box 4-Pack is also available for $8.16 with free shipping via Subscribe & Save, although the coupon doesn't apply.
Fiber One Bran Cereal 16-oz. Box 6-Pack for $10 + free shipping, more 
