To get the half-price special you just need to pay for yhour Frappucino by using the Starbucks app or a Starbucks card.
The deal is part of the “Merry Mondays” holiday promotion at Starbucks. No coupon required. Starbucks announced the deal on the Starbucks Merry Mondays Page. You can download the Starbucks app for iPhone, Android or Windows at: Starbucks App.
Starbucks Rewards Program
Join the Starbucks Rewards Program and receive free drink or food rewards, custom offers on items you enjoy when you opt in to receive for My Starbucks Rewards® email, early access to new products and easy payment with the mobile app.
You can find the complete Starbucks menu at the Starbucks Menu site.
About Starbucks (from Wikipedia)
Starbucks Corporation (NASDAQ: SBUX) is an international coffee and coffeehouse chain based in Seattle, Washington. Starbucks is the largest coffeehouse company in the world, with 17,009 stores in 55 countries, including over 11,000 in the United States, over 1,000 in Canada, over 700 in the United Kingdom, and over 150 in Turkey.Starbucks sells drip brewed coffee, espresso-based hot drinks, other hot and cold drinks, coffee beans, salads, hot and cold sandwiches and panini, pastries, snacks, and items such as mugs and tumblers.
For more information, visit the Starbucks website.