How much is this custom desktop worth?

I went to a shop today where you can choose parts for a desktop you want to build. That's how the desktop looks like: Case: ASUSVENTO TA-M21 BLACK CPU: INTEL CORE I-2500 3.30 GHZ LGA1155 - BOX RAM: KINGSTON KHX1600C9D3B1K2/8GX 8GB (2X4GB) HYPERX BLU Graphics Card: SAPPHIRE RADEON HD6870 1GB PCI-E... show more I went to a shop today where you can choose parts for a desktop you want to build. That's how the desktop looks like:

Case: ASUSVENTO TA-M21 BLACK
CPU: INTEL CORE I-2500 3.30 GHZ LGA1155 - BOX
RAM: KINGSTON KHX1600C9D3B1K2/8GX 8GB (2X4GB) HYPERX BLU
Graphics Card: SAPPHIRE RADEON HD6870 1GB PCI-E RETAIL
HARD DISK: SEAGATE ST500DM002 500GB BARRACUDE 7200.12 SATA3
MOTHERBOARD: ASUS P8H61 PRO REV3.0
DVDW: lg gh24ns90 secure disc dvd rewriter black bulk
screen: lg e2251s-bn 21.5'' led tft black

I'd like to know if it's a good build and if possible tell me how much all this together is worth, because I personally think that the price they gave me is just too much.
Update: If someone is kind enough to chat with me on skype please add me: ''paul-aristidou''
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