Doesn’t seem like a great deal to me. Granted, they are Z-Wave and not Zigbee, so rather unusual for lights. FYI, though, Home Depot has the Commercial Electric smart retrofit units for $29.97.
Commercial Electric 5 and 6 in. Smart LED Recessed Downlight
and
Commercial Electric 4 in. Matte White Recessed LED Smart Downlight
These are color-tunable white, Zigbee. I have several of them and they look and work great.