There are a few things you can do to help improve throughput from countries that don't convert that well. First, translate the terms into their language so they know what they are getting. Then, do the currency conversion so they know how much they are paying. Offer support information in their language. And when possible, offer local payment types that they may be more willing to sign up with. Not every country uses credit cards the way Americans do.
We recently launched a new service that specifically addresses your international traffic by alerting them to local payment options they can use. It's called
Logo GPS and you can see the press release
here.
This gives your site an international feel by specifically addressing each potential customer specifically, based on their location. Epoch clients are free to use this script anywhere on their site and as often as they wish.