Hi,
i don't know if this is the correct place for that... well.... you can move this post.
my suggestion is to localize in Italian, Spanish and Brazilian Portoguese your web site and the application. I think that a lot of users are stopped to buy something that not understand at 100%.
Your site is not big so the cost is not elevate.
I can see that the OSX version of skipe is a pure cocoa application, so the localization is easy and fast.
Please consider this option.
if you need help, you can contact me.
regards,
MaX