You can now set Alexa to alert you when eligible products on your Amazon wish list or in your basket are about to be on offer. The tool, which is currently only available to customers in the US, can trigger pop-up or ring light notifications up to 24 hours in advance of the deal going live.
https://www.notebookcheck.net/Alexa-can-now-notify-Amazon-customers-of-deals-up-to-24-hours-in-advance.611246.0.html