As one of its Black Friday ad deals, Best Buy offers the Ring 1080p Video Doorbell 2 bundled with the 3rd-generation Amazon Echo Dot for $139.99 with free shipping. That's $109 less than the best price we could find for these if purchased separately elsewhere. The doorbell features adjustable motion sensors, two-way audio, and night vision while this current-generation Echo Dot features a new speaker design, making it 70% louder than the previous model with better sound quality.
You can also get the above with the Ring Chime Pro WiFi Extender & Speaker for $179.99 with free shipping. That's $118 less than the best price we could find for these if purchased separately elsewhere.
Making even one of these mistakes can easily cost you tens of thousands of dollars.