The Wyze Sense appears to be out of stock. See https://wyze.com/starter-bundle.html
I’m guessing that the next generation will be coming out soon OR it’s being discontinued (being that they haven’t fixed the various issues that so many have been experiencing).
I recently switched to an Echo Flex ($10 deal) with motion sensor add-on ($15) for $25 total. There is a package deal at the moment for $22. It works as designed including the delayed no motion detected routines and seems to be quicker to respond (like maybe a second quicker being it is an Amazon product and probably one less hop through the internet). Bonus is that it’s an Echo device. While not the greatest sound for music, good for basic Alexa interactions and easy enough to connect a better shower speaker via Bluetooth for better sound. Further, no need for a camera bridge with a proprietary connection or bateries (i.e. normal WiFi with longer range connectivity).