Page Comparison

def price

if (productDoesNotDependOnAnother) {
    /* price of the product does not depend on another product */
    /* so we can calculate the price right away */
    price = calculatePrice()

} else {

    /* price of the product is derived from price of other/master product */
    if (api.getIterationNumber() == 0) {
        /* if this is first pass, then we need to wait for the related product to be calculated */
        api.markItemDirty()

    } else {

        /* this is already second pass, so we expect the other/master product to be calculated already */
        masterProductPrice = api.currentContext(skuOfTheMasterProduct)?.Price
        price = calculatePriceFrom(masterProductPrice)
    }
}

return price