Currently my keyword takes #13 position in Google.
There are 15 million search results for my keyword phrase.
My domain is about 1 year and several months old.
The keyword ranking in Google Top 5 should be there for at least 40 days before making any payment. Only White hat efforts need to be put in getting rankings.
I'm ready to pay only for the result: so, You should agree with the following: Stipulate your time frame and if you are not able to bring my site with my keyword to Google Top 5 and stay there at least 40 days within that time period specified by you, then you'll cancel escrow payment.
Please specify what kind of method you are going to use? Give the details as much as possible. I will choose the best service with the best price.