Key point you need the starter kit to get the bridge, after that you can add on more sensors but the bridge which is needed only comes in the starter kit
Welcome to the community, @gmoogle. The products aren’t listed in a text format. However, if you choose one of the three options on the left, the picture on the right changes to show what is included in the kit. It confused me for a bit, too, and I’ll bring it up to Wyze.
For any Apple users out there, the product photo and video seems to be broken/absent when viewed in Safari (only for Wyze Sense). I’ll report that to Wyze.