Walmart has the Merkury Innovations A21 Smart Color Light Bulb on sale for $4.97 with free shipping.
- No hub required, Wi-Fi is built into the bulb.
- 11-Watt, 1050 Lumens, equivalent to a traditional 75-Watt incandescent bulb.
- Control your bulb with your smartphone, Amazon Alexa, The Google Assistant or Microsoft Cortana.
- Ready to use anywhere. Choose from millions of colors.