Amazon has the Ring Alarm 8 piece combo (base station, 1 keypad, 2 motion sensors, 3 door sensors, 1 extender) and an amazon echo 3 on sale for $179 after the $60 discount at checkout for prime users. ($239 on page – $60 at checkout!)
No coupon required – prime members only.
I believe this is the lowest price to date (+a free echo)
https://www.amazon.com/gp/product/B07L91FQ97/