How much does it cost to repair a iphone 3G at Apple store?

I have a iphone 3g that has a broken home button, and I want to take it to Apple so that I can repair it and im wondering how much is it going to cost? Thanks a lot

Is it in warranty?

That cost would vary greatly depending on what the repair is and whether or not the repair would be covered under warranty or not.

The best and most logical way to find out would be to take it to the Apple Store and ask them directly.
Asking that sort of question on an online forum will only bring you conjecture and "best guesses".

Just take it there and find out.

If it's under warranty, it'll be free. If it isn't under warranty, then it could cost a lot.

If you have water damage, it's $200 to get an out of warranty repair. Which means you are basically buying a new phone.