Well then, that complicates things a whole lot. Looks like your only choice for a reliable brand would be $60:
It is currently out of stock, with no ETA listed. If you really must have it soon, then you will realy need to cut some corners and get this 300W PSU for $40:
It is currently in stock, but is only 300W. The only reason I recommend it is because I used to have a GeForce FX 5600 which said it required a 250W power supply, but it worked just fine for me on a 200W. I really dont recommend it if you can avoid it though.