Groupon is currently having a promotion where you can get a $10 Starbucks egift card for $15. You can only get one per person and it expires 5/31/2016.
When you do purchase your egift card, it gives you an option to transfer your funds to your Starbucks account so you can continue to earn your Stars. There is limited quantity and time to purchase this deal so if you are a Starbucks fan then jump on it!
Another way to save money is to first go through a shopping portal to earn mile or get cash back. I personally went through TopCashBack to receive 5% off my Groupon purchase. If you currently don’t have an account, you can register through my link here.