I bought a number of these at Best Buy when it went on sale for $24.99 (normally $39.99). Now selling (albeit refurbished) on eBay for only $12.99 so I bought more. Cheapest Homekit compatible smart switch in the market by far. I do not use the Insignia app, but connect with Homekit instead. Works perfectly. Here is the link:
https://www.ebay.com/itm/Insignia…5125