Looks like this is Amazon's response to Google's doorbell (+Nest Hub) promotion
Purchase the Amazon Echo Show 8 with Alexa (2nd Gen) and a Ring Video Doorbell Wired in the same transaction for $249
Both items must be purchased in the same cart transaction to receive bundle offer.
Amazon has the same offer available as well with similar T&C's
The discount is applied at the payment page and not when products are added to cart
Alternatively, Amazon Echo Show 8 (2 Gen) is on sale for $149 (50 off RRP) at JB Hi-Fi and Amazon
Cheers
Same bundle also at Amazon.
https://www.amazon.com.au/dp/B084TNNGPL