From Amazon: buy a $50 gift card and send it to a recipient by text, receive a $10 promo credit for yourself.
YMMV is this is stated to be a targeted deal, meaning not everyone will be eligible for it. I didn't receive an e-mail for it; i just happened to be shopping on Amazon and noticed the header at the top of the page. If you're eligible, you should be able to see the same header at the top of the page (or at least the gift card page).
I've already gone ahead and ordered the gift card (texted it to myself of course LOL), so i'll verify when i receive the promo credit. Fine print said you should receive your promo credit within three days. Deal ends 10/17. Good luck.