Nobody can guarantee top positioning.
You cannot guarantee a ranking on Google. There is no amount of money that can do this. Even in the ads because we sort not only by the bid but by clickthrough. So even if someone says they are going to guarantee you a first place ranking – nobody can guarantee you a first place ranking – not even me. I cannot force any website to be #1.
Dec 2007 Matt Cutts takes a bribe… @ 69 seconds