The following code can check whether a feature is enabled in the account or not.
// Check the features enabled in the account.
var multiCurrency = runtime.isFeatureInEffect({
feature: 'MULTICURRENCY'
});
var multiPrice = runtime.isFeatureInEffect({
feature: 'MULTIPRICE'
});
var quantityPricing = runtime.isFeatureInEffect({
feature: 'QUANTITYPRICING'
});