The ConfigurableItemPriceCalculator, ConfigurableItemPriceListCalculator, and ConfigurableItemPriceListSaleCalculator pre-calculators ignore any price information provided by an external configurator. If you are using an external configuration system to get prices, you should remove the pre-calculators from the ItemPricingEngine. For example:
#This set is used if you are using priceLists to store your prices. This means the prices are retrived from the PriceLists repository.
#preCalculators-=\
calculators/ConfigurableItemPriceListCalculator,\
calculators/ConfigurableItemPriceListSaleCalculatorFor additional information on working with calculators, refer to the Core Commerce Pricing Calculators.

