MiniVend has a rich set of I18N features to allow conditional message display, differing price formats, different currency definitions, price factoring, sorting, and other settings.
The definitions are maintained in the catalog.cfg file through the use of built in POSIX support and MiniVend's Locale directive.
All settings are independent for each catalog and each user of that catalog -- you can have customers accessing the same catalog in any of an unlimited number of languages and currencies.