My father's iPhone 3gs. The home button has not been working. I am not sure what the issue is but I have now enabled assistive touch which now has a home button on screen which replaces the purpose of the home button. The screen has some scuffs and one scratch, whereas the casing has one crack near the charger port. Both are shown in the images Selling for parts or repairs, maybe someone could figure out what's wrong with the home button, unfortunately that wasn't me.
eBay