Price NOW $12.99 (12/2/2020) Here are links to all the products in the video.
Martin Jerry Wifi switch Single pole (one switch operates light): https://amzn.to/3g4gXpN
Checkout Out Martin Jerry PLUG! https://amzn.to/2yoGBUL
Non-Contact Voltage Tester https://amzn.to/2WUiLpW
Kasa Smart 3-way switch (there are two that you can put on two separate lights) https://amzn.to/2FlnRWu
Wifi switches will continue to be cheaper and cheaper. I found that the three way wifi DIMMER switches were just too expensive. Martin Jerry Smart Switch were so easy to use, work great, and were actually the cheapest I found! Please leave a comment if you have a better option, or know how to source cheaper switches!