Hi Robert, sorry to hear your not happy with our plugin. There are no costs with this plugin it is totally FREE. Nothing is mentioned on our website regarding costs because the plugin is now free for anyone to use.
We are busy working on improving the plugin daily at the moment and are aware of some bugs that are being fixed and a new version will be released very soon.
If your referring to the green button within the plugin that asks you to Buy Pro Version, this is going to be removed. We were charging for the plugin and have now decided to give it away totally free, which is a very good offer considering it allows you to collect up to 10,000 emails per month.
So were not hiding anything behind a sign up page and feel we are developing a very useful plugin that will be of benefit to peoples businesses.