Seems a good deal to me! I believe it switches automatically between HDMI devices when it receives signal from a different source. Runs off the HDMI power too, clever stuff!
*** Original Duronic Product ***Auto switches smartly between up to 3 HDMI sources to one high definition display up to FULL HD 1080p and higher resolutions
NO LOSS Full HD quality. Highly compatible with std HDMI devices. Manual switch override.
Self-powering via HDMI. Supports upto 25m cable lengths each side.
Ultra compact design (5cm by 5cm). 24K Gold-plated connector plug contacts
HDMI v1.3b (Latest/fastest spec). HDCP compliant. Fully HDMI Certified. RoHS & CE approved