Try finding the same Vista PC
Dell Inspiron 530n (Ubuntu)
N-Series-Intel® Pentium® Dual-Core E2140 Processor (1.6GHz,800MHz,1MB cache)
Ubuntu Desktop Edition Version 7.04
Dell™ 19" Silver Wide Flat Panel (SE198WFP)
1024MB 667MHz Dual Channel DDR2 SDRAM [2x512]
160GB (7200rpm) Serial ATA Hard Drive with 8MB
128MB nVidia® GeForce® 8300GS
16x DVD +/- RW Drive
Integrated 7.1 Channel High Definition Audio
1 Year Base Warranty - Collect & Return
£416.61
Inspiron 530 Vista
Intel® Celeron® 420 Processor (1.6GHz,800MHz,512k cache)
Genuine Windows Vista® Home Premium
Dell™ 19" Value Flat Panel (SE197FP)
Integrated Intel® Graphic Media Accelerator 3100
1024MB 667MHz Dual Channel DDR2 SDRAM [2x512]
160GB (7200rpm) Serial ATA Hard Drive with 8MB
16x DVD +/- RW Drive
1 Year Base Warranty - Collect & Return
Integrated 7.1 Channel High Definition Audio
£349.00
This comparison was made seemingly very difficult but I seem to be paying £67.61 to not have Vista ?