After I bought my W810i for £30 a guy wants to buy my other one (boxed etc) for £80 off me - bad news is that it's on eBay atm so I can't sell it. He's ok with a phone similar to it though, provided it's the same spec and he'll pay £80.
Of course I want to get it cheap as so I can make some money (not a friend, but will pay) - it needs to have a decent camera (ie 1 MP+), can't be Samsung (ideally a Sony Ericsson or Nokia), should be able to play MP3's, have Bluetooth and be an all-round "good phone" really. It also needs to be unlocked, although i'm capable of unlocking it myself (if it can be done via a Firmware flash like i've done on mine).
I would love to get another W810i for £30, but alas i think that offer has gone - feel free to recommend me one. I had my eye on a "W770i" although I have no idea if it's any good. I'm OK with buying of eBay as long as it's new (in fact it's preferred if it costs no extra so i get more feedback)