mmWave Sensor for motion detection

Job ID: 36299778

Budget: $30 – $250 USD

https://hlktech.net/index.php?id=974
https://www.dfrobot.com/product-2282.html
http://www.micradar.cn/en/products.html
https://www.seeedstudio.com/Components-Sensors-c-2015.html

Above are 4 options to use mmWave Sensor for motion detection.
Need help to select based on Availability and FCC Certification.
Either it is FCC Certified or it can be easily Certified from FCC.
Further Availability matters a lot as well.