Hi Dan,

You would have to do a new order calculator using the Tea Commerce API. Here's a few lines of code illustrating how to "hook" in and calculate the order line unit prices. As you can see it's a simple override of at method and there are a lot more methods to override in the OrderCalculator class

using TeaCommerce.Api.Dependency; using TeaCommerce.Api.Models; using TeaCommerce.Api.Services; using TeaCommerce.Api.InformationExtractors; using TeaCommerce.Api.PriceCalculators;

namespace YourApp.TeaCommerceExtension {

[SuppressDependency( "TeaCommerce.Api.PriceCalculators.IOrderCalculator", "TeaCommerce.Api" )] public class OrderCalculator : TeaCommerce.Api.PriceCalculators.OrderCalculator {

public OrderCalculator( IVatGroupService vatGroupService, ICurrencyService currencyService, IShippingMethodService shippingMethodService, IPaymentMethodService paymentMethodService, IShippingCalculator shippingCalculator, IPaymentCalculator paymentCalculator, IProductInformationExtractor productInformationExtractor )
  : base( vatGroupService, currencyService, shippingMethodService, paymentMethodService, shippingCalculator, paymentCalculator, productInformationExtractor ) {
}

protected override decimal CalculateOrderLineUnitPrice( OriginalUnitPrice originalUnitPrice, OrderLine orderLine, Currency currency, Order order ) {
  //... Do code here
}

} }

/Rune