Amazon offers the KIND Gluten Free Granola Bars 15-Pack in five flavors (Variety Pack pictured) for $10.77. Add it to your cart via Subscribe & Save to cut it to $10.23 and bag free shipping. That's the lowest total price we could find for any flavor in this quantity by $6.
Be sure to cancel Subscribe & Save once your order ships or else you'll be billed for subsequent shipments.
Update: It's available once again.