Microsoft Store offers the Belkin Miracast Video Adapter for $39.99 with free shipping. That's the lowest total price we could find by $20. It features compatibility with Surface tablets and most Windows 8.1 laptops.
Best Buy offers the Philips Smart WiFi Blu-ray Player, model no. BDP2205/F7, for $49.99 with free shipping. That's $10 under our October mention and the lowest total price we've seen. (It's also the best deal we could find today by $25.) It features streaming apps (Netflix, Pandora, YouTube), 1080p playback, DVD upscaling, 802.11n wireless, USB, and one HDMI output.
Abt offers the LG WiFi Blu-ray Disc Player, model no. BP340, for $49 with free shipping. (Several other stores are matching this deal, including Amazon and B&H Photo.) That's the lowest total price we could find by $18. It features 1080p DVD up-scaling, WiFi, USB, and one HDMI output.