How to build a $20 47A power supply

[RacerMike42]

like RC Toy mentioned above I am surprised no one has mentioned this has gotta be the same power supply that Max Amps is selling for $80,
http://www.maxamps.com/Power-Supply-12V.htm

Thanks to the thread starter for posting this, I had been browsing around looking for a new power supply and came across this thread. I picked one up off of ebay for $15 + $12 shipping
Had I not seen this I was about to buy the Max Amps one.