I was doing this (refreshing).

I had the Amazon app open on my phone and the website on my MacBook. I added it to my cart from the app at approx 14:00:01 ET, and by the time I clicked the cart and then checkout I got an error message saying the item was sold out.

I was so pissed that this happened, because I had been planning to follow this diligently since the day it was announced, and I had no less than 3 calendar events in my phone so that my day would be replete with reminders. I had the other websites that were supposedly selling it open as well, as a failed backup plan.

I should have written a script.