I've got the wife's Nokia 6300 up for sale; it's unlocked (tried on o2, Vodafone and Orange and it works a treat on all of them).
It's in the original box with all manuals, chargers, leads, Nokia PC Suite CD and battery.
It's in good condition, there are a few minor surface abrasions to the silver metal on the back of the phone where she's got it in and out of her bag but otherwise it looks good.
Cheque or direct bank transfer only; PM me for details. Price includes insured RM Recorded Delivery.