Seo : no cure no pay

I am looking for someone who can help me reach position 1 with my website on 1 keyword.
i am prepeared to give the person 5% off the income after the results. But no results no pay.
We have for the moment every month 5000€ so there could be 5% for you. If you reach the goal.

 

if you pay 5000, you can do AdWords company for your sait for that keywords.

 

which keyword is this?