Need atleast a 450w for under 50$, is it possible?

here, these will all power that system.

http://www.amazon.com/Corsair-CMPSU-...117027&sr=1-24

http://www.amazon.com/OCZ-OCZ500MXSP...117061&sr=1-36

Nothing like that exists, unless you buy used.

Yeah those PSU's will work fine.
http://www.newegg.com/Product/Produc...82E16817139008
That gets my vote.

Bought it, thanks guys.

I don't think that any one makes a 2 pci-e cable, 400w psu. I think you need to be in the 500w range for it to come with 2 pci-e cables.

Honestly, a gts250 would run on any cheap 400W PSU or even a branded 350W(depending on the rest of your rig). You can get pretty much any PSU that you can find in that range.

Either the Corsair CX400w or VX450w would be sufficient. I ran 2 9600GSOs (SLI) and an 8600GTS (PhysX) which were all folding when not gaming on the CX400w along with a Q6600. I wouldn't recommend 3 cards on a 400w PSU for a long-term setup, but it held flawlessly. This was with using 2 molex-to-PCI-E adapters (1 for second GSO and GTS). A single GTS 250 would run very well and would have room to OC