hey! thanks a lot for the answer! look, i'v been to some shops and they all asked me for like 80 euros. I even tried playing dumb at the apple store and they asked 150 euros for a replacement + the iphone. ahm...but i'm not that dumb, considering that with a maximum of 200 euros you can buy a mint condition 32gb 3gs. So i sold it, took 30 euros out of my pocket and got a good 16gb 3gs.
Still, if anyone has a solution to this issue, i'm still curious about it...