Upgrade price Last updated: 25-Sep-2019 Rate this article: Overview Retrieve the upgrade price for a subscription. Attributes Parameters Type/Description BillingPrice Double The price Avangate charges the customer, without taxes. BillingGrossPrice Double The price Avangate charges the customer, including taxes. BillingCurrency String The currency ISO code used for the payment - ISO 4217. Quantity Int The mandatory quantity for the upgrade (you cannot make partial upgrades) DisplayPrice Double Display price. DisplayGrossPrice Double Display price before deductions. DisplayCurrency String Display currency. ISO 4217 code. Rate this article: