I've dealt with a bunch of starbucks gift card sellers before.
Most of them are legit and are working still to this day but remember this:
Always a chance of the balance being wiped from starbucks, so as soon as you buy them go buy physical gift cards with the virtual gift card and then you have less of a chance of your balance being wiped.
This discount is better than any other one i've seen so that makes the risk even higher.
Be careful!
This has never been true funtotry, both the legit comment and the physical card comment. Once you buy a physical gift card it is still very easy for them to zero it out.
Buying a large balance gift card is an even faster way to get your card cancelled.
I usually get like a couple 20$, they dont go into the trouble of disabling all of the ones I buy. Large balance gift cards, don't combine your gift cards to get one card at a high balance, your just asking to get red flagged by starbucks.