diff --git a/nullptr/models/base.py b/nullptr/models/base.py
index c7c8a26..dad656a 100644
--- a/nullptr/models/base.py
+++ b/nullptr/models/base.py
@@ -7,6 +7,7 @@ class Base:
   store: object
   
   def __init__(self, symbol, store):
+    self.disable_dirty = False
     self.store = store
     self.symbol = symbol
     self.define()
@@ -36,7 +37,7 @@ class Base:
       setattr(self, attr, lst)
     
   def __setattr__(self, name, value):
-    if name not in ['symbol','store','__dict__']:
+    if name not in ['symbol','store','disable_dirty'] and not self.disable_dirty:
       self.store.dirty(self)
     super().__setattr__(name, value)
   
@@ -47,7 +48,9 @@ class Base:
     return False
     
   def load(self, d):
-    self.__dict__ = d
+    self.disable_dirty = True
+    self.__dict__.update(d)
+    self.disable_dirty = False
     
   def dict(self):
     r = {}
diff --git a/nullptr/models/marketplace.py b/nullptr/models/marketplace.py
index fc59251..6ae0e98 100644
--- a/nullptr/models/marketplace.py
+++ b/nullptr/models/marketplace.py
@@ -27,7 +27,10 @@ class Marketplace(SystemMember):
         price['sell'] = mg(g, 'sellPrice')
         prices[symbol] = price
       self.prices = prices
-      
+  
+  def sellable_items(self, resources):
+    return [r for r in resources if r in self.prices]
+    
   @classmethod
   def ext(self):
     return 'mkt'