Amazon offers the refurbished Netgear Arlo Add-On HD Security Camera for $84.97 $79.99 with free shipping. That's tied with our mention from ten days ago and the lowest price we could find by $17. It features magnetic mounting, night vision, live viewing, and wireless connection.

Note: It requires either the Arlo or Nighthawk R7000 camera kit. A 90-day Netgear warranty applies.