It's about 50k per goal / headline-feature. We'll make more of them depending on the level of funding. We're doing it to make sure whatever the level of funding we can be sure we'll deliver a our backers a well polished package.
If you've got a moment it'd be good to know your configuration. My default answer is to recommend Chrome, but all versions of Firefox are supported (for those without WebGL support we provide a small plugin as an alternative).