diff --git a/module/os_handler/os_status.py b/module/os_handler/os_status.py
index 92a186b86..b42e75903 100644
--- a/module/os_handler/os_status.py
+++ b/module/os_handler/os_status.py
@@ -61,9 +61,13 @@ class OSStatus(UI):
         tasks = SelectedGrids(self.config.pending_task + self.config.waiting_task).filter(func).sort('next_run')
         return tasks.first_or_none()
 
+    @property
+    def bought_all_yellow_coin_items_in_port_shop(self) -> bool:
+        return self.config.cross_get("OpsiShop.Storage.Storage.BoughtAllYellowCoinItems", False)
+
     @cached_property
     def yellow_coins_preserve(self):
-        if self.is_cl1_enabled:
+        if self.is_cl1_enabled and not self.bought_all_yellow_coin_items_in_port_shop:
             return 100000
         else:
             return 35000
diff --git a/module/os_shop/shop.py b/module/os_shop/shop.py
index 161aff586..a9d123776 100644
--- a/module/os_shop/shop.py
+++ b/module/os_shop/shop.py
@@ -210,11 +210,19 @@ class OSShop(PortShop, AkashiShop):
         items = self.scan_all()
         if not len(items):
             logger.warning('Empty OS shop.')
+            self.config.cross_set("OpsiShop.Storage.Storage.BoughtAllYellowCoinItems", True)
             return False
         items = self.items_filter_in_os_shop(items)
         if not len(items):
             logger.warning('Nothing to buy.')
+            self.config.cross_set("OpsiShop.Storage.Storage.BoughtAllYellowCoinItems", True)
             return False
+        if all(item.cost == 'PurpleCoins' for item in items):
+            logger.info("All yellow coin items are bought.")
+            self.config.cross_set("OpsiShop.Storage.Storage.BoughtAllYellowCoinItems", True)
+        else:
+            logger.info("There are still yellow coin items to buy.")
+            self.config.cross_set("OpsiShop.Storage.Storage.BoughtAllYellowCoinItems", False)
         self.os_shop_get_coins()
         skip_get_coins = True
         items.reverse()