How much does it cost for the top button of the iphone 5 to be fix?

Seems like a lot of people get the same problem as me when trying to press the top button of the iPhone 5. I have to click on it on the left side of the button for it to work.

It should be replaced at cheap around $20-$30

Relatively cheap. You could probably do it yourself. But its safer to take it to a store to have it fixed. NEVER GO TO MACAUTHORITY! They overcharge for everything.