Have anyone try or thinking to try this for light source + diffuser + (some) Lens

http://tesladownunder.com/LEDs.htm#100%20W%20LED

Apparently, they are selling these at around $100 on ebay

What is your opinion on this?

BTW, what PSU and lens you could suggest with this?

Following is the spec
  • Lens Color: Water Clear
  • Emitted Color : White
  • DC Forward Voltage (VF): 30~35 Vdc
  • DC Forward Current (IF): 3800mA
  • Viewing Angle: 140 Degree
  • Color Temperature: 5500~7500K
  • Intensity Luminous (Iv): 5000~6000LM