diff --git a/nullptr/api.py b/nullptr/api.py
index f96c012..266fdb9 100644
--- a/nullptr/api.py
+++ b/nullptr/api.py
@@ -141,3 +141,44 @@ class Api:
     if 'agent' in data:
       self.agent.update(data['agent'])
     return contract
+  
+  def sell(self, ship, typ):
+    units = ship.get_cargo(typ)
+    data = {
+      'symbol': typ,
+      'units': units
+    }
+    data = self.request('post', f'my/ships/{ship}/sell', data)
+    if 'cargo' in data:
+      ship.update(data)
+    if 'agent' in data:
+      self.agent.update(data['agent'])
+    return data
+    
+  def buy(self, ship, typ, amt):
+    data = {
+      'symbol': typ,
+      'units': amt
+    }
+    data = self.request('post', f'my/ships/{ship}/purchase', data)
+    if 'cargo' in data:
+      ship.update(data)
+    if 'agent' in data:
+      self.agent.update(data['agent'])
+    return data
+  
+  def jettison(self, ship, typ):
+    units = ship.get_cargo(typ)
+    if units == 0:
+      print('cargo not found')
+      return
+    data = {
+      'symbol': typ,
+      'units': units
+    }
+    data = self.request('post', f'my/ships/{ship.symbol}/jettison', data)
+    if 'cargo' in data:
+      ship.update(data)
+    if 'agent' in data:
+      self.agent.update(data['agent'])
+    return data
diff --git a/nullptr/commander.py b/nullptr/commander.py
index 648ade8..e463a64 100644
--- a/nullptr/commander.py
+++ b/nullptr/commander.py
@@ -72,8 +72,11 @@ class Commander(CommandLine):
   def after_cmd(self):
     self.store.flush()
       
-  def do_info(self):
-    pprint(self.api.info(), 100)
+  def do_info(self, arg=''):
+    if arg.startswith('r'):
+      self.api.info()
+    
+    pprint(self.agent, 100)
     
   def do_register(self, faction):
     self.api.register(faction.upper())
@@ -200,3 +203,26 @@ class Commander(CommandLine):
       waypoint = self.resolve('Waypoint', arg)
     r =  self.api.marketplace(waypoint)
     pprint(r)
+  
+  def do_cargo(self):
+    if not self.has_ship(): return
+    for c, units in self.ship.cargo.items():
+      print(f'{units:4d} {c}')
+      
+  def do_buy(self, resource, amt=None):
+    if not self.has_ship(): return
+    if amt is None:
+      amt = self.ship.cargo_capacity - self.ship.cargo_units
+    self.api.buy(self.ship, resource.upper(), amt)
+    self.do_cargo()
+  
+  def do_sell(self, resource):
+    if not self.has_ship(): return
+    self.api.sell(self.ship, resource.upper())
+    self.do_cargo()
+    
+  def do_dump(self, resource):
+    if not self.has_ship(): return
+    self.api.jettison(self.ship, resource.upper())
+    self.do_cargo()
+    
diff --git a/nullptr/models/marketplace.py b/nullptr/models/marketplace.py
index 79eee6d..9229c3f 100644
--- a/nullptr/models/marketplace.py
+++ b/nullptr/models/marketplace.py
@@ -17,8 +17,16 @@ class Marketplace(SystemMember):
     self.setlst('exchange', d, 'exchange', 'symbol')
     if 'tradeGoods' in d:
       self.last_prices = time()
+      prices = {}
       for g in mg(d, 'tradeGoods'):
-        pass
+        price = {}
+        symbol= mg(g, 'symbol')
+        price['symbol'] = symbol
+        price['buy'] = mg(g, 'purchasePrice')
+        price['sell'] = mg(g, 'sellPrice')
+        prices[symbol] = price
+      self.prices = prices
+      
   @classmethod
   def ext(self):
     return 'mkt'
@@ -26,3 +34,11 @@ class Marketplace(SystemMember):
   def path(self):
     sector, system, _ = self.symbol.split('-')
     return f'atlas/{sector}/{system[0:1]}/{system}/{self.symbol}.{self.ext()}'
+  
+  def f(self, detail=1):
+    r = self.symbol
+    if detail > 1:
+      r += '\n'
+      for p in self.prices.values():
+        r += f'{p["symbol"]:25s} {p["sell"]:5d} {p["buy"]:5d}\n'
+    return r