min position i google

If you need garantees go somewhere else than SEO or buy adwords.

The cost can be from almost nothing to a lot but at the end the cost is not what matters - I would rather pay a lot to get a lot than pay almost nothing and get nothing (or even worse; get my site punished).

Thomas Rosenstrand or Mikkel DeMib would be good to talk to or you can take a look at Amino.dk.