BigDeals via eBay offers the open-box Philips In.Sight Wireless Home Monitor for iPhone/iPad/Android, model no. M100/37, for $59.99 with free shipping. That's tied with last month's mention and the lowest total price we could find by $13. It features a magnetic base, expandability up to 16 monitors, 802.11n wireless, operation via iPhone and iPad app, noise and motion detection, and the ability to upload recordings to Dropbox.
A 60-day BigDeals warranty applies.