There are many ways to ensure your Return on Investment (ROI) and one concrete way is to have Performance Reports.
We can provide the reports as often as required (we suggest bi-monthly) to tell you where your website ranks in all the major search engines (we can literally add hundreds of minor ones too if required) for your chosen keywords.
We can customise reports to your SEO campaign requirements and will advise you of the best way to benchmark depending on the type of campaign being run.