They're selling tickets at/for 10 dollars 'apiece'. [=each ticket costs 10 dollars]
She gave the kids a dollar 'apiece'. [=she gave a dollar to each kid]
His shoes weigh four pounds 'apiece'.
(..) Well, say we pay for one roll a month? One roll a month? You realize by the time I see my photos, I'm gonna be middle-aged. Look, we got her rolls of film, right? At $. apiece to develop, that's $.. - I don't think we're being unfair. - Oh, honey. Are we? That's why I love you. (..)2009 The Lovely Bones