Four-pack of AHGEIIY MFi-certified braided Lighting cables for $2.95 on Amazon

Saw this deal on the Cheapskate blog (Rick Rules). Includes 2- 3.3 ft. cables and 2- 6.6 ft. cables.
Cheapskate link:
https://www.cnet.com/news/the-sch…5689215004
When I added the cables to may Amazon cart and went to check out, I noticed that the discount had been taken before I entered the promo code. So I figured I’d enter it anyways and see what happens… and what do you know? Double discount. See invoice below.
Promo code is: 4DDURQNF
Direct Amazon link:
https://www.amazon.com/gp/product…UTF8&psc=1
Item(s) Subtotal: $13.60
Shipping & Handling: $0.00
Promotion Applied: -$5.44
Promotion Applied: -$5.44
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Total before tax: $2.72
Estimated tax to be collected: $0.23
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Grand Total: $2.95
***I could only use the promo code once on my account (par for the course), but I logged in with my wife’s account and was also able to get the same double-discount!
As of 5:55 pm PST on 01-06-2020