The standard version of Google Analytics is completely free to use. A Google account is the only requirement to sign up and use the product. Google offers a premium product Google Analytics 360 (previously Google Analytics Premium), which costs $150,000USD.
In terms of paying for Google Analytics Consulting, you can expect to pay between $50-$300 per hour depending on the experience of the service provider.
There’s no real reason to pay for Google Analytics 360 unless you’re exceeding the 10 million hits per month or sampled data is an issue.
You can check your hit volume under Property Settings:
Here are some of the unique features you get in Google Analytics 360: