Not going to get much bang but here is a suggestion from the Nvidia line. I have an EVGA card and I have no complaints. You should be able to run this in your free 2.0 slot. Newegg often has free shipping days for different items. You could get lucky. It' free as of right now on shipping but it goes up as high as $7 shipping.
EVGA GT 610 1GB DDR3 VRAM--- $40 +shippinghttp://www.newegg.com/Product/Product.aspx?Item=N82E16814130788&name=Desktop-Graphics-Cards