12-Pack 15oz Starbucks Doubleshot Zero Sugar Coffee Energy Drink $20 at Amazon (opens in new tab)

Amazon has the 12-Pack 15oz Starbucks Doubleshot Zero Sugar Coffee Energy Drink (French Vanilla) on sale for $24 - 15% off coupon (check "Save an extra" box, eligible on first S&S order for this product) - 5% off with Subscribe & Save (can cancel anytime) = $20 with free shipping on $35+ or with Prime. Roughly $1.63 per can vs. $2.50 - $3.50 at most grocery stores.