I did a little research for you and sites do appear to offer this as a service.
Do you want just a simple static page, or does it still need to have PHP activity happening on it?
If just static, you could View Source on the rendered page, copy it all, paste it into a new file and just delete all the Joomla code. You would need to check that the layout remains intact, and you may have to alter the CSS.
There are also reports of Dreamweaver helping with this but I can't verify this.
Interested to know how you get on.