This is one deal you will want to jump on, as in the past it has sold out quite fast.
The fine print: Promotional value expires Dec 31, 2015. Amount paid never expires.Limit 1/person. Cannot be purchased with promotional codes. Offer valid within US only. Must redeem voucher by expiration date. Groupon will send amount paid in Starbucks Card eGift if not redeemed by expiration date within 30 days. All sales final.