Nest has a sale right now, which offers their Indoor and Outdoor Wi-Fi camera bundle for $398, saving you $100 off the regular price, or about $50 off each camera.
Both cameras offer wide angle live video streaming in 1080p HD, plus night vision, two-way communication plus push alerts to your phone, to go with the option to share live streams. Users will be able to get motion alerts plus the option for a paid subscription for cloud video recording.
Unfortunately, there is no Apple HomeKit support, but despite this, people rave about the image quality from Nest Cams, both at day and night.
The newer Nest Cam IQ is coming at the end of this month and is priced at $399, so these sales could be one way to clear out stock of older models.