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Disclaimer - The Discover offers are no longer valid.
Raise.com seems to have an excess of Starbucks gift cards (almost 500 of them) so they are offering them at steep discounts.
They come in $100 denominations and are 12.9% or 12.8% off.
Use promo code THANKS for another 3% off for close to 16% off. There is no maximum on how large a gift card will qualify. You can add starbucks egift cards right to your existing Starbucks account
Start your shopping from Top Cashback and you'll get an additional 2% cashback into your account. I have been use Top cashback since November of 2012 and I already have close to $300 in my account for shopping I would be doing anyway.
Pay with your Discover Card and you will get 5% cashback on any online purchases until the end of December (limit of $75 cashback for the quarter).
If you are a new customer you can use coupon code RAISE60AF and save $5 off $60. I don't know if they can be combined because I am not a new customer but give it a shot