If you're looking for the absolute cheapest item you can get at Starbucks, it's free - a cup of filtered water. Tea is also a great value, with seasonal teas costing just 40 cents more than regular iced tea options (green or black). Plus, you can get any tea with lemonade at no extra charge. Cold beer is also surprisingly delicious, although it doesn't quite compare to Stumptown cold beer.
It's no secret that Starbucks menu prices seem to go up every 6 months, making it difficult to feed your caffeine addiction five mornings a week. But there are still some drinks on the menu that are surprisingly affordable. A Venti cup of hot coffee is one of the best deals, as it comes with 20 ounces of coffee for a reasonable price. Trenta smoothie iced tea (31 oz) is also a great value, as you'll save money and get more iced tea compared to ordering two 12 oz Talls.
Iced coffee is another great option, as you'll receive 24 ounces of iced coffee with very little frozen water taking up space in your cup. Plus, if you're sharing the Venti with someone, you'll save more than a dollar instead of ordering 2 Talls. If you're looking for a quick and inexpensive caffeine boost, the Great American (225 mg caffeine) is perfect for your needs. Don't forget that Starbucks offers a free drink or meal on your birthday - simply present your Rewards card up to 2 days before or 1 day after your b-day and you'll be good to go.
The birthday drink includes drinks of any size, so order the 31-ounce Trenta (cold only) and get the most bang for your buck. Finally, if you're looking for an item produced by Starbucks itself, the cheapest item would be Brewed Coffee in the “short 8 fl oz” size.