Second Hand Iphone

[MadMan-JaMeS]

Hey guys,

I'm wanting to buy a 2nd hand iphone, and just wondered is there anything i should be careful off ?

I'm looking to get a 3GS, can't afford a iphone 4.

Can i update a 3gs with the latest firmware ?

 

[MadMan-JaMeS]

Any other sites other than ebay where i can buy one ?

like official apple forums or something ?
Or if you know somebody selling one e-mail in trust lol