MMORPGs and work use
hope you can help

This is what i want to get-
1 x Foxconn Socket 775 Intel 64-bit Motherboard
1 x Intel Pentium D 925 Processor(Dual core 3GHz(x2)
1 x Intel Socket 775 Heat-Sink & Fan
TOTAL=£103.16

Then i have to get a PSU

http://rover.ebay.com/rover/1/711-1751-2978-71/1?AID=5463217&PID=2366933&loc=http%3A%2F%2Fcgi.ebay.co.uk%2FAntec-430w-TRUEPOWER-TRIO-Power-supply-80-PLUS-BNIB_W0QQitemZ120215051676QQihZ002QQcategoryZ42021QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Which was this until i saw http://www.ebuyer.com/product/135101/show_product_reviewsthis.
Why is it that the case and psu is cheaper than just the psu?

Would this be compatible with the rest of the stuff?
TOTAL=£146.15

RAM-
Kingston ValueRAM memory – 2048 MB ( 2 x 1024 MB ) – DDR II
TOTAL=176.66

Sapphire RADEON HD 2600XT – graphics adapter – Radeon HD2600XT – 256 MB
TOTAL=£236.40

Is there any alternative to this stuff thats just as good but cheaper?