Groupon has $5 for $10 value at Starbucks. Pretty simple… Over 100,000 bought… go forth and caffeinate! Usual reminder: You can save even more with cashback shopping sites like eBates ($5 new customer bonus), Mr. Rebates ($5 bonus), and BigCrumbs. Groupon: Starbucks $5 for $10 from My Money Blog. © MyMoneyBlog.com, 2013.