Windows 7: Need Advice

Hello,
I am seeking some advice on a computer (link below) is this deal to good to be true,has anyone used this company before?
Also I sent the seller a message asking about the case and a more detailed spec he was very short with me and said
"The case is exactly the same as in the picture"
What do you think its an amazing spec for the price I think
MANY THANKS
Matthew

G3 PC I7 860 1TB 4GB DDR3 GTS450 1GB GAMING COMPUTER on eBay (end time 24-Nov-10 15:34:49 GMT)

Thin on specifics so cost is hard to ascertain. Plus there is still 3 weeks in the auction for the price to increase.

Its a buy it now listing meaning you pay that price without bidding

I would never buy an expensive item from Ebay. You are taking a chance. Look around on the internet from a store. You can find some really good deals.

Pretty Cheap components. Notice that there is no brand name on memory, Hard Drive or Optical Drive. Also, no Windows and without an OS you are just paying for the parts and labor to build it and if he builds a lot of PC's and buys parts in bulk, I am sure he doesn't pay what you would for the parts. That price = about 850 USD. In US the processor is $280, The Motherboard is $90, The Graphics card is $130. Thats $500 in those 3 parts. I know that the ram, HDD, optical drive and case are not another $350. More like around $200-$250. Leaving around $100-$150 in profits, so it is not really that great of a deal. No monitor, no keyboard and mouse and no OS.