diff --git a/library/src/calculator_functions.cpp b/library/src/calculator_functions.cpp
index 704b363..c0b0ce8 100644
--- a/library/src/calculator_functions.cpp
+++ b/library/src/calculator_functions.cpp
@@ -473,6 +473,17 @@ int Calculator::findNextWorkTimeRange(QDateTime const &dt,
     return nextWorkTimeRange;
 }
 
+uint32_t Calculator::computeWeekDaysPrice(Configuration const *cfg, PaymentMethod id) const {
+    int pop_id = cfg->PaymentOption.find(id)->second.pop_id;
+    return cfg->PaymentRate.find(pop_id)->second.pra_price;
+}
+
+double Calculator::computeWeekDaysDurationUnit(Configuration const *cfg, PaymentMethod id) const {
+    int pop_id = cfg->PaymentOption.find(id)->second.pop_id;
+    int durationId = cfg->PaymentRate.find(pop_id)->second.pra_payment_unit_id;
+    return (double)(cfg->Duration.find(durationId)->second.pun_duration);
+}
+
 using namespace Utilities;
 
 Ticket Calculator::private_GetCostFromDuration(Configuration const* cfg,