It costs $10 per month (or $100 per year), and any additional Nest Cam costs $5 per month (or $50 per year). The more expensive plan allows you to store video recordings for up to 30 days, and it costs $30 per month (or $300 per year) with additional cameras costing $15 per month (or $150 per year). I’ll be honest: Nest Aware is pretty expensive.