How much would it cost to build a computer? Requirements in details?

CPU: Core i5 Quad-core 2.5Ghz or higher
Memory: 6GB or above
Resolution: 1280 x 720 or higher
GPU: GeForce GTX 560 or above OR Radeon R7 260X, DirectX11 compatible GPU mid-range or above, Hard Disc Free Space on SSD: 20 GB or more, Internet Connection 8Mbps or above,
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