The price for Constant Contact would be entirely different from the price and charges associated with the business that created/hosts your website as it is a separate company. You can view the prices for all of our different plans by logging into your trial account and clicking the "View Plans & Pricing" link at the top of the page. The cost is based off of the package that you choose and the number of contacts stored within your account. If you'd like to speak to someone to determine what might be the best plan for you please don't hesitate to reach out to us at 781-482-8912.
I'd also suggest checking out our Marketplace to see if there's any integration with your website that would allow for your contacts to be automatically imported from there to our system.
I hope that helps!