For its Prime members only, Amazon offers the Ito En Oi Ocha 16.9-oz. Unsweetened Bold Green Tea 12-Pack for $15.89. Clip the 15% off coupon and checkout via Subscribe and Save to cut it to $12.72 and bag free shipping. That's $1.06 per bottle and $6 less than what you'd expect to pay at a local retail store, although we saw the regular flavor for $4 less in March.

Note: Be sure to cancel Subscribe & Save after your item ships to avoid being billed for future shipments.