Yes it is a full unit with 4 boards.
No PSU they're a dime a dozen. I find the resell value pretty bad and I can still get use out of it.
But if the price is right I'll throw in a RPI with cgAM .img, if someone needs it.
Where can you get a good 1000 watt power supply for .10 cents?
you can get a decent server one for less than $20 without much effort.
if I can get mine working - I'll send you an offer. I think my place right now is too cold for it to work