Now that dell have removed the C521 (£188 then £211) from the line I have been looking round to try and find a replacement base unit only, best I can do this week is this. You need to deselect the 19"TFT as well as reducing the warranty, then add Logitech Cordless Desktop EX110 and select Mouse Included in Wireless Keyboard and Mouse option [subtract £17.62]to get this price.
Remember to reduce the warranty to minimum where applicable and buy via *Quidco for further cashback savings.
305-D07V02XP Home site - Best price £244.47 Delivered or *less.
VostroTM 200 MT (D07V02XP)
Intel Pentium Dual-Core E2140 Processor (1.6GHz,800MHz,1MB cache)
Genuine Windows XP Home Edition - English
1024MB 667MHz Dual Channel DDR2 SDRAM [2x512]
320GB (7200rpm) Serial ATA/100 Hard Drive with 16MB DataBurst cache
256MB ATI Radeon X1300 Pro PCI Express graphics card
Dell Entry Quietkey USB Keyboard - UK/Irish (QWERTY)
Dell 2 Button USB Scroll Optical Mouse - Black
Integrated 7.1 Channel High Definition Audio
Microsoft Works 8.0 - English
13-in-1 Media Card Reader
16x DVD +/- RW Drive
Logitech Cordless Desktop EX110 - UK/Irish (QWERTY)
Base Warranty - 1 Year Business Hardware Support