Bukkit

I know this is a very annoying request, as it requires you to practically rewrite half the plugin, so I'm fine if you put this at the very bottom of your to-do list but:

GUIs have a history of being very unreliable duping-wise. There is usually a way to exploit them, regardless of how you code them simply due to minecraft's limitations. Would it be possible that you could have a config option to set the GUI to false and possible create some text-only/command-only/sign-based shop for those paranoid of this? This is probably one of the sole reasons I am not already using your plugin already.

Thank you very much for creating this plugin either way, and so far I have seen very few bugs.

Oh, one more thing: Could you add an option in the config that allows people to exit out of the shop without clicking the shop exit button?

Thanks in advance
Regards,
Neo