If using a speaker to order another speaker isn’t the future, I don’t know what is.
After testing its legitimacy, we can confirm that saying “Alexa, order a (black or white) Sonos Play:1” gives users $50 off its sticker price of $199. Or maybe you’re looking for something a bit bigger. Play:5 has a similar deal, and a similar command. Using the wording above, swap out Play:1 for Play:5 and can snag a really exceptional speaker for just $399, a $100 savings.
The deal didn’t seem to be available on other Sonos products.