If you're logged into your Neto Control Panel and you're browsing your webstore, having the option to have an edit button display would be very handy. I sometimes find myself wanting to edit something while browsing my site and I have to load up cPanel, go to products, search for that product and then hit edit. With an edit button shown on the site (only if I'm already logged into cPanel) I'd just have to hit that and the cPanel edit screen would load up, no searching and a lot of time saved!
This is similar to the WordPress toolbar that you can have displayed at the top of your WordPress website that will let you access the cPanel and a direct link to edit the page.