B&H Photo Video offers the TP-Link Smart WiFi Light Switch 3-Way Kit for $69.99. Clip the 35% off coupon on the product page to drop that to $44.99. With free shipping, that's tied with our October mention and the lowest price we could find by $8 today. They're compatible with the Kasa mobile app, Amazon Alexa, and Google Assistant.
Reviewing this critical insurance policy takes a little effort, but it pays off big.