Pre sale question

I’ve been checking the plugin to be implemented on one site but demo standar seems to be not sending a billing and only sending the package information just like the Free plugin, How can I charge the handling service? I wanted to see the standard demo as client and your demo is offline, now thats make doubt of quality service of your plugin. I don’t want to sell an Idea that your plugin is the solution to my client if I’m not convinced while I’m seeing a lot of addons without a minor documentation of what I’m goint to see on a normal WP instalation and what I will get after filling or clicking the function of the addon.

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