iphone 3gs 8g prices?

[the man]

hi
i can get a 3gs free upgrade on three, but i don't want to sign-up to 24months if i could get a good price for the phone i would sell it and get a few quid toward the bills

whats it worth?

[janobi]

hi
i can get a 3gs free upgrade on three, but i don't want to sign-up to 24months if i could get a good price for the phone i would sell it and get a few quid toward the bills

whats it worth?

Probs ?150 or something, probs more if brand new.