Will you be carrying the power supplies again or are they permanently out of stock?
The power supplies can be found on eBay or other places for less than $20 shipped.
The key here is this board makes plugging one in and using it so simple that don't hesitate to buy one.
I've bought two of the cards from Gigampz and the power supplies from elsewhere.
The cards are AWESOME! Don't hesitate to buy one.