Rang up Virgin mobile today to see what refurbished (or as new) phones they had and I was told they were doing the Blackberry Curve 8520 for £65 on PAYG (comes to 69.99 with delivery). I think its a good deal for anyone after a cheap blackberry. I myself did not go for it as I'm after an android phone I think it comes with all of the original accessories just in an unofficial box. This is not on-line you will have to ring Virgin Mobile. I am already a virgin mobile customer which might make a difference.
As New Blackberry Curve (Black) 8520 Virgin Mobile PAYG - £69.99 including delivery @ Virgin Mobile