Amazon has 18-Count Purina DentaLife Daily Oral Care Dog Sticks (Large Chews) on sale for $7.94 - 5% ($0.40) Subscribe & Save - Extra 20% Off ($1.59) coupon found on product page = $5.95.Shipping is free w/ Prime or on $35+ orders.

Thanks to SD QA rachaelm for finding this deal

Note, must clip the coupon found on product page for discount to apply at final checkout