The main specifications of this barebones are: -
# Intel Celeron E3200 2.4Ghz
# 2Gb 240Pin DDR2 800Mhz
# ATX Tower Case With 400w PSU
# Intel G31 + ICH7 Motherboard
This is a very hot deal as at this moment in time - it's actually more expensive to buy the parts seperately and put them together yourself. This comes prebuilt (obviously without hard drive/dvd drive etc.) and comes to about £20 cheaper than buying everything seperately.
NB. They are also selling Windows 7 Home Premium retail for £83 at the moment, and with his bundle, you can get £10 off that too making it £73 - bargain considering Windows 7 has actually been released now!!