am i being ripped off or is this a good deal?

considering a new pc

do any learned people have opinions on it or any hardware which should be avoided?

1 x 160 GB SATA HDD UDMA 300 7200 8MB
1 x 500W PSU
1 x Samsung DVD +/-RW 18x6x18x8 D/LAYER Black (IDE)
1 x 10 X USB 2.0 Ports
1 x Motherboard Integrated 5.1 Sound
1 x Motherboard Integrated Ethernet Lan (Broadband Ready)
1 x 4 Port Firewire IEEE 1394 PCI Card FREE CABLE
1 x 4GB DDR2 PC-6400 800 MHZ (4 x 1 GB 800)
1 x Internal Card Reader 50-in-1
1 x Speeze QuadroFlow VIII - Low Noise
1 x 19" Widescreen LCD TFT Monitor 8 MS
1 x ASUS P5N-E SLI S/L 1066FSB (NVIDIA 650i)
1 x Microsoft Windows Vista Home Premium SP1 32-BIT (Genuine DVD & COA Included)
1 x Intel Core 2 Quad Q6600 (4 x 2.40 GHZ) G0 1066FSB - 8 MB
1 x X-Blade Silver
1 x OpenOffice 2.3.1
1 x NVIDIA GeForce 9600GT - 1 GB - 2xDVI/VGA/HDMI (XpertVision) - OverClocked
1 x Restore DVD, Clone Backup & Original O/S DVD
1 x Built & Tested
1 x Standard (7-9 Working Days)
1 x UK Mainland
1 x Standard - 9:00 AM to 6:00 PM
1 x E-Mail/MSN Support
1 x 12 Months Return To Base


Grand Total Inc Vat: £716.34

 

The only thing I can see is make sure 500watt power supply isnt a cheap one. Stability may suffer if it is. Other then that it looks good