I was ordering the Firestick 4k for me when I saw a targeted deal for my account which gave me 50% off for the Firestick 4k using the code 4KFIRETV. I got it for $25 but like I mentioned it's a targeted deal. The terms and conditions page read this:
Exclusive Offer: 50% Off Fire TV Stick 4K
Exclusive, limited-time offer. Terms & Conditions apply.
This is a limited time offer. Qualifying customers only. Amazon reserves the right to modify or cancel the offer at any time. Offer good while supplies last