You haven't been specific enough whether you're on SEO or PPC business? Anyhow, what hat are you wearing?
You mentioned about getting companies on top, are you talking about ranking a brand name or highly competitive search term? In case of the former, I'll tell you, anyone can get a strange brand name (which no one searches) on top of google but what if my business is to sell kamagra, Do you even know how cutthroat that industry is? Can you get my page on top? and if you do how long will it take?
Four days ago google updated their new algorithm to combat over optimization, it's called penguin update and it's a real bitch, do you have any idea how it has changed the industry and what is your counter attack strategy?
If you answer these questions we can talk money.