Once a member logs in, any parameters set to "Registered" will show, so in that way, your layout will appear differently. Unless you've used hacks or extensions that affect your page layout, that should be the only difference, but you don't say what "different" means. You can include screenshots if this doesn't answer your question, or you can give a url and test login username and password by messaging me.
As far as purchasing the component, there's nothing to purchase. CB is free software, and the only thing you may want to pay for is the documentation subscription. (The doc subscription does provide a thank you gift of CB 1.2's latest RC, which is still being tested and worked on prior to public release.