New Buy 1 Get 1 FREE Starbucks Doubleshot Coupon!September 23, 2010 by Mitchell Wischmann This post may contain a link to an affiliate. See my disclosure policy for more information. Starbucks released a new high value coupon! Go here and wait for the pop-up screen to print a buy one Doubleshot Energy + Coffee 15 oz can, get one FREE coupon! This is a SmartSource coupon and it expires 10/31/10.Thanks, Hip2Save and Eeendeavors!