Woot offers Diamond Multi-Channel 2X2 Wireless HDMI 5GHz Stream Kit - HD 1080P Video/Audio up to 150ft from Any HDMI Source to HDTV/Monitor/Projector for $79.99 (orig. $229.99). Free shipping for Prime Members. 

Product Description:
The Diamond VS300M wireless HDMI kit includes one transmitter unit and one receiver unit (Additional Receivers sold separately), allows HDMI video/audio signal transmission and extending the HDMI video/audio signal up to 150 feet wirelessly. 5 GHz provides strong anti-interference capability. The Diamond VS300M wireless extender not only supports point to point configuration, but also supports one to multiple (1 to 2), (2 to 2) and (2 to 1) configuration. This extender supports wide range IR frequencies 20-60KHz that can detect IR remote controls of the source devices from receiver side. With both button control and IR controller, the VS300M makes source control easy. The Diamond VS300M the best solution for transmitting one or more HDMI source signal to one or more screens in long distance without running wires simultaneously, perfect for conference room, home entertainment and educational applications 

• Allows for seamless full HD 1080Pat60/50Hz streaming from any HDMI enabled source without the need cables that clutter your entertainment center to your HD TV/Projector up to 150 ft. clear line of site.
• Includes HDMI loop through so you can simultaneously view the same video content in two rooms. In addition you can add a second receiver and view simultaneously in three rooms (Second receiver sold separately)
• With select-able wireless channels, you can have two separate extender kits operating at the same time without conflict. Each kit includes a remote to control the wireless channel which is handy when you have the receiver out of arms reach
• The VS300M allows you to simultaneously view the same content on two different displays (one via receiver and another via HDMI loop-through feature). In addition, you can add another receiver (second receiver sold separately) and view simultaneously on three different displays
• The VS300M Kit includes one transmitter and one receiver. Additional Receiver (VS300RX) can be purchased separately
• USA Technical Support- Free 800 telephone number and email. Customer Support is available from our home office in Los Angeles, Ca. We offer a one year, warranty for all our products
• Diamond Multimedia - based in Los Angeles, California USA, leading manufacture of High Quality Computer Products in over 20 years