i can get you some really high end graphic cards for dealer prices.
pretty much the budget standard setup is an i5, a 128 GB SSD boot drive a 1 TB or 750GB 7200rpm+ hard drive, minimum of 8 GB of ram, a blu-ray drive, 750-850 watt power supply, and a motherboard that's 3.0 pci-e and usb 3.0 compliant. and I always recommend getting an after market cooler for the CPU. stock coolers just COOK anything and everything. i suggest either a really good push/pull fan set up with a GIANT heat sink, or an enclosed water cooling system. NEVER gimp out on CPU cooling it you're going to game with it.
and as for graphics cards. tell me what you want, and very high chance i can get it for you. lets just say if i can get a gtx 690 for 650-550 range and a HD 7970 for 280-300 I can almost get anything under the sun.