A couple months ago, I spent some time investigating I18N format for various types of values. One of them was currency formatting.

Currency formatting can be quite challenging. One that is worthwhile for Qt to provide in order to fullfill the "Qt is easy to deploy globally" promise. Depending on the country, locals may prefer a leading or trailing currency symbol ("$ 1" vs "1 YUAN"). Some prefers a space separating the symbol and the actual value while others want none. Some may want two decimal-point values while others do not (i.e. 2.10 vs 2.1). Positive and negative formatting are different too. Similar to Date/Time, these are country-specific preferences; not language-specific.

Anyone implementing an application to sell on Ovi Store can use this feature to properly format their pricing information and produce a more polished localized UI.