End of line, new stock of Apple's Airport Extreme base station for £50.60. Has usb for wireless printing and usb drive sharing (turning any USB 2.0 drive(s) into NAS).
This is the non-gigabit ethernet version - apple bumped the specs recently to include this, otherwise it is identical to the current version selling at £100+ elsewhere. http://www.apple.com/airportextreme/
Next day postage only £5 - mine arrived today!
Edit: can also use for time machine over wi-fi on mac os x leopard - add a usb drive(s) and you effectively end up with timecapsule functionality