GPU upgrade for dell optiplex 360?

Any possible recommendations from amazon?
Even a low end DX11 GPU (doesnt need DX12)
openGL 4.0 GPU possibly around 25$ or less?

I have 3.3Ghz dual core CPU in it and 2GB ram windows 7 ultimate 64-bit

I was looking for a GPU that would balance the computer more (its using built-in GMA G31/G33 graphics right now)

Is there one thats reasonably priced that can balance out the graphics power of the computer? The CPU is fast enough to run a playstation2 emulator at full speed in software mode (with frame skipping)
but the IGP just isnt cutting it. and even a mild Intel HD Graphics can do 60FPS in hardware mode with a slower CPU
(thats the problem. the CPU is slower. so i'd only get 60FPS looking at the floor or sky) then the GPU usage drops and the framerate also drops.

I was thinking maybe amazon since thats the only online account we have to buy something from at the moment. is there anything like that?

also is it possible you could recommend a reliable but dirt cheap volt/multimeter?

darn.. looks nice but even low profile is over 25$.
office max used to sell GPU's but not anymore so i cant just go into town for a cheap one D:

also if you can see if theres one with a low profile bracket (with VGA for my monitor. only have a VGA and DVI input)

How about this?
Amazon.com: XFX AMD Radeon HD 5450 1GB GDDR3 VGA/DVI/HDMI Low Profile PCI-Express Video Card ONXFX1PLS2: Computers & Accessories

Hmm it seems very close but the price is still high. may not be able to afford it. i read some concerns in the reviews about VGA cable not being long enough and some concerns of no low profile bracket at all.

That is up for bid. and not available to "buy" unless winning the bid.
And we don't have a way to buy off ebay at all for the moment. so I'm looking at amazon and similar places.