diff --git a/library/src/calculate_price.cpp b/library/src/calculate_price.cpp
index 90f67d7..2df4053 100644
--- a/library/src/calculate_price.cpp
+++ b/library/src/calculate_price.cpp
@@ -134,7 +134,7 @@ int CALCULATE_LIBRARY_API get_maximal_parkingprice(Configuration *cfg, PERMIT_TY
             if (pv) {
                 QVector<ATBPaymentRate> const &paymentRate = pv.value();
                 if (paymentRate.size() > 0) {
-                    int const price = paymentRate.at(0).pra_price; // price is given per hour
+                    int const price = paymentRate.last().pra_price; // price is given per hour
                     maxPrice = qRound((maxTime * price) / 60.0f);
                 }
             }
diff --git a/main/main.cpp b/main/main.cpp
index 23c32c9..4701648 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -37,8 +37,8 @@ extern "C" char* strptime(const char* s,
 #define SZEGED                                  (0)
 #define SCHOENAU_KOENIGSEE                      (0)
 #define NEUHAUSER_KORNEUBURG                    (0)
-#define NEUHAUSER_LINSINGER_MASCHINENBAU        (1)
-#define NEUHAUSER_NORDISCHES_AUSBILDUNGSZENTRUM (0)
+#define NEUHAUSER_LINSINGER_MASCHINENBAU        (0)
+#define NEUHAUSER_NORDISCHES_AUSBILDUNGSZENTRUM (1)
 #define NEUHAUSER_BILEXA_GALTUER                (0)
 #define NEUHAUSER_KIRCHDORF                     (0)
 
@@ -569,15 +569,16 @@ int main() {
         int Up = 1;
         //compute_next_timestep(&cfg, )
 
+        QDateTime const start = QDateTime::currentDateTime();
         for (int i=0; i<timeSteps.size(); ++i) {
             int nextTimeStep = compute_next_timestep(&cfg, timeSteps.at(i), Up);
             qCritical() << "nextTimeStep" << nextTimeStep;
 
-//            uint32_t price = calculator.GetPriceForTimeStep(&cfg, timeSteps.at(i));
-//            uint32_t duration = calculator.GetDurationForPrice(&cfg, price);
-//            qCritical() << "nextTimeStep relative to start:"
-//                        << duration << start.addSecs(duration * 60)
-//                        << "(price so far:" << price << ")";
+            uint32_t price = Calculator::GetInstance().GetPriceForTimeStep(&cfg, timeSteps.at(i));
+            uint32_t duration = Calculator::GetInstance().GetDurationForPrice(&cfg, price);
+            qCritical() << "nextTimeStep relative to start:"
+                        << duration << start.addSecs(duration * 60).toString(Qt::ISODate)
+                        << "(price so far:" << price << ")";
         }
     }
 #endif
@@ -645,14 +646,13 @@ int main() {
 #endif
 
 #if NEUHAUSER_KORNEUBURG==1
-    std::ifstream input("/tmp/tariff_korneuburg.json");
+    std::ifstream input("/opt/ptu5/opt/customer_714/etc/psa_tariff/tariff01.json");
     int pop_max_time;
 
     std::stringstream sstr;
     while(input >> sstr.rdbuf());
     std::string json(sstr.str());
 
-    Calculator calculator;
     Configuration cfg;
 
     bool isParsed = cfg.ParseJson(&cfg, json.c_str());
@@ -674,19 +674,19 @@ int main() {
                     QDateTime start = s.addSecs(offset * 60);
                     //qCritical() << "start" << start.toString(Qt::ISODate);
 
-                    double cost = calculator.GetCostFromDuration(&cfg, 3, start, end, duration, nextDay, prePaid);
+                    double cost = Calculator::GetInstance().GetCostFromDuration(&cfg, 3, start, end, duration, nextDay, prePaid);
                     //Q_ASSERT(cost == duration*2.5);
                     //qCritical() << "";
-                    //qCritical() << "start" << start.toString(Qt::ISODate)
-                    //            << "end" << end.toString(Qt::ISODate)
-                    //            << "duration" << duration
-                    //            << "cost" << cost;
-
-                    std::string duration = calculator.GetDurationFromCost(&cfg, 3, start.toString(Qt::ISODate).toStdString().c_str(), cost);
-                    //Q_ASSERT(cost == duration*2.5);
                     qCritical() << "start" << start.toString(Qt::ISODate)
-                                << "cost" << cost
-                                << "until" << duration.c_str() << start.secsTo(QDateTime::fromString(duration.c_str(), Qt::ISODate)) / 60;
+                                << "end" << end.toString(Qt::ISODate)
+                                << "duration" << duration
+                                << "cost" << cost;
+
+                    //std::string duration = Calculator::GetInstance().GetDurationFromCost(&cfg, 3, start.toString(Qt::ISODate).toStdString().c_str(), cost);
+                    //Q_ASSERT(cost == duration*2.5);
+                    //qCritical() << "start" << start.toString(Qt::ISODate)
+                    //            << "cost" << cost
+                    //            << "until" << duration.c_str() << start.secsTo(QDateTime::fromString(duration.c_str(), Qt::ISODate)) / 60;
                 }
             }
         }