TomTop offers the MiraScreen WiFi HDMI Display Receiver for $11.62. (Choose "China Warehouse" to see this price.) Coupon code "TTV1627" cuts that to $8.95. With free shipping, that's the lowest price we could find by a buck, although most sellers charge at least $12. It uses WiFi to mirror content from your smart device on TVs, monitors, or projectors. Features include an AM8252 CPU, 128MB RAM, 128MB flash storage, 802.11n wireless, HDMI interface, support for video resolutions up to 1080p, Apple Airplay and Miracast support, and Linux OS.

Note: This item ships from China and requires 10 to 20 business days for delivery. The countdown timer on the product page does not reflect an actual expiration time and resets daily.