Amazon offers the Fiber Plus Chocolate Chip Chewy Bars 10-Count 6-Pack for $18.98. Add it to your cart via Subscribe & Save and it drops to $16.13 and yields free shipping ($0.27/bar). That's a buck over our December mention, but the lowest total price we could find for this quantity by $14. They purport to contain 35% of your daily fiber needs.

Of note, "Subscribe & Save" can be easily canceled after your order arrives, but be sure to do so or you'll be billed for subsequent shipments.