Evaluate average before price in order returns

freqtrade/exchange/exchange.py

@@ -475,6 +475,7 @@ class Exchange:
             "id": order_id,
             'pair': pair,
             'price': rate,
+            'average': rate,
             'amount': _amount,
             'cost': _amount * rate,
             'type': ordertype,

freqtrade/freqtradebot.py

@@ -554,14 +554,14 @@ class FreqtradeBot:
                                )
                 stake_amount = order['cost']
                 amount = order['filled']
-                buy_limit_filled_price = order['price']
+                buy_limit_filled_price = safe_value_fallback(order, 'average', 'price')
                 order_id = None
 
         # in case of FOK the order may be filled immediately and fully
         elif order_status == 'closed':
             stake_amount = order['cost']
             amount = safe_value_fallback(order, 'filled', 'amount')
-            buy_limit_filled_price = order['price']
+            buy_limit_filled_price = safe_value_fallback(order, 'average', 'price')
 
         # Fee is applied twice because we make a LIMIT_BUY and LIMIT_SELL
         fee = self.exchange.get_fee(symbol=pair, taker_or_maker='maker')

freqtrade/persistence.py

@@ -369,20 +369,20 @@ class Trade(_DECL_BASE):
         """
         order_type = order['type']
         # Ignore open and cancelled orders
-        if order['status'] == 'open' or order['price'] is None:
+        if order['status'] == 'open' or safe_value_fallback(order, 'average', 'price') is None:
             return
 
         logger.info('Updating trade (id=%s) ...', self.id)
 
         if order_type in ('market', 'limit') and order['side'] == 'buy':
             # Update open rate and actual amount
-            self.open_rate = Decimal(order['price'])
+            self.open_rate = Decimal(safe_value_fallback(order, 'average', 'price'))
             self.amount = Decimal(safe_value_fallback(order, 'filled', 'amount'))
             self.recalc_open_trade_price()
             logger.info('%s_BUY has been fulfilled for %s.', order_type.upper(), self)
             self.open_order_id = None
         elif order_type in ('market', 'limit') and order['side'] == 'sell':
-            self.close(order['price'])
+            self.close(safe_value_fallback(order, 'average', 'price'))
             logger.info('%s_SELL has been fulfilled for %s.', order_type.upper(), self)
         elif order_type in ('stop_loss_limit', 'stop-loss', 'stop'):
             self.stoploss_order_id = None