diff --git a/nullptr/analyzer.py b/nullptr/analyzer.py
index 4b36a67..cc63255 100644
--- a/nullptr/analyzer.py
+++ b/nullptr/analyzer.py
@@ -3,6 +3,7 @@ from nullptr.models.jumpgate import Jumpgate
 from nullptr.models.system import System
 from nullptr.models.waypoint import Waypoint
 from dataclasses import dataclass
+from nullptr.util import pprint
 from copy import copy
 
 class AnalyzerException(Exception):
@@ -109,6 +110,7 @@ class Analyzer:
     mkts = [m.waypoint for m in self.store.all_members(orig.system, Marketplace)]
     cur = orig
     if orig == to:
+      
       return []
     while cur != to:
       best = cur
@@ -157,8 +159,8 @@ class Analyzer:
           prices[r] = []
         prices[r].append({
           'wp': m.waypoint,
-          'buy': p['buy'],
-          'sell': p['sell']
+          'buy': p.buy,
+          'sell': p.sell
         })
     return prices
   
diff --git a/nullptr/api.py b/nullptr/api.py
index 9239cc2..6392591 100644
--- a/nullptr/api.py
+++ b/nullptr/api.py
@@ -121,6 +121,7 @@ class Api:
       units = min(units, fuel_avail)
     data = {'fromCargo': from_cargo, 'units': units }
     data =  self.request('post', f'my/ships/{ship}/refuel', data)
+    self.log_transaction(data)
     if from_cargo:
       boxes = ceil(float(units) / 100)
       ship.take_cargo('FUEL', boxes)
@@ -236,7 +237,18 @@ class Api:
     result = self.store.update_list('Survey', mg(data, 'surveys'))
     return result
   
+    
   ######## Commerce #########
+  def log_transaction(self, data):
+    if not 'transaction' in data: return
+    typ = mg(data, 'transaction.tradeSymbol')
+    ppu = mg(data, 'transaction.pricePerUnit')
+    shipsym = mg(data,  'transaction.shipSymbol')
+    ship = self.store.get('Ship', shipsym)
+    units = mg(data, 'transaction.units')
+    act = mg(data,'transaction.type')
+    ship.log(f'{act} {units} of {typ} for {ppu} at {ship.location}')
+    
   def sell(self, ship, typ,units=None):
     if units is None:
       units = ship.get_cargo(typ)
@@ -245,7 +257,7 @@ class Api:
       'units': units
     }
     data = self.request('post', f'my/ships/{ship}/sell', data)
-    ship.log(f'sell {units} of {typ}')
+    self.log_transaction(data)
     if 'cargo' in data:
       ship.update(data)
     if 'agent' in data:
@@ -258,7 +270,7 @@ class Api:
       'units': amt
     }
     data = self.request('post', f'my/ships/{ship}/purchase', data)
-    ship.log(f'buy {amt} of {typ} at {ship.location}')
+    self.log_transaction(data)
     if 'cargo' in data:
       ship.update(data)
     if 'agent' in data:
diff --git a/nullptr/commander.py b/nullptr/commander.py
index 2fdfa30..8c8b9bf 100644
--- a/nullptr/commander.py
+++ b/nullptr/commander.py
@@ -184,7 +184,7 @@ class Commander(CommandLine):
     for w in r:
       
       wname = w.symbol.split('-')[2]
-      traits = ", ".join(w.traits())
+      traits = ", ".join(w.itraits())
       typ = w.type[0]
       if typ not in ['F','J'] and len(traits) == 0:
         continue
@@ -542,3 +542,9 @@ class Commander(CommandLine):
       pprint(prices[resource.upper()])
     else:
       pprint(prices)
+  
+  def do_path(self, waypoint_str):
+    if not self.has_ship(): return
+    w = self.resolve('Waypoint', waypoint_str)
+    p = self.analyzer.find_nav_path(self.ship.location, w, self.ship.fuel_capacity)
+    pprint(p)
diff --git a/nullptr/models/base.py b/nullptr/models/base.py
index db92485..aec041c 100644
--- a/nullptr/models/base.py
+++ b/nullptr/models/base.py
@@ -36,6 +36,9 @@ class Base:
   def __getstate__(self):
     return {k:v for k,v in self.__dict__.items() if not k.startswith('_')}
 
+  def dirty(self):
+    self.store.dirty(self)
+    
   @classmethod
   def ext(cls):
     raise NotImplementedError('no ext')
diff --git a/nullptr/models/marketplace.py b/nullptr/models/marketplace.py
index 834a916..f8f5f58 100644
--- a/nullptr/models/marketplace.py
+++ b/nullptr/models/marketplace.py
@@ -2,9 +2,29 @@
 from .base import Base
 from time import time
 from nullptr.util import *
-from dataclasses import field
+from dataclasses import field, dataclass
 from nullptr.models import Waypoint
+from typing import List, Tuple
 
+SUPPLY = ['SCARCE','LIMITED','MODERATE','HIGH','ABUNDANT']
+ACTIVITY =['RESTRICTED','WEAK','GROWING','STRONG']
+class MarketEntry:
+  buy: int
+  sell: int
+  volume: int
+  supply: int
+  activity: int
+  history: List[Tuple[int, int, int, int, int, int]] = []
+  
+  def add(self, buy, sell, volume, supply, activity):
+    self.buy = buy
+    self.sell = sell
+    self.volume = volume
+    self.supply = supply
+    self.activity = activity
+    self.history.append((int(time()), buy, sell, volume, supply, activity))
+  
+  
 class Marketplace(Base):
   def define(self):
     self.imports:list = []
@@ -21,6 +41,21 @@ class Marketplace(Base):
   
   def is_fuel(self):
     return self.imports + self.exports + self.exchange == ['FUEL']
+  
+  def record_prices(self, data):
+    for g in data:
+      symbol= mg(g, 'symbol')
+      if symbol in self.prices:
+        e = self.prices[symbol]
+      else:
+        e = self.prices[symbol] = MarketEntry()
+      buy = mg(g, 'purchasePrice')
+      sell = mg(g, 'sellPrice')
+      volume = mg(g, 'tradeVolumes')
+      supply = SUPPLY.index(mg(g, 'supply'))
+      activity = ACTIVITY.index(sg(g, 'activity','STRONG'))
+      e.add(buy, sell, volume, supply, activity)
+    self.dirty()
     
   def update(self, d):
     self.setlst('imports', d, 'imports', 'symbol')
@@ -28,16 +63,7 @@ class Marketplace(Base):
     self.setlst('exchange', d, 'exchange', 'symbol')
     if 'tradeGoods' in d:
       self.last_prices = time()
-      prices = {}
-      for g in mg(d, 'tradeGoods'):
-        price = {}
-        symbol= mg(g, 'symbol')
-        price['symbol'] = symbol
-        price['buy'] = mg(g, 'purchasePrice')
-        price['sell'] = mg(g, 'sellPrice')
-        price['volume'] = mg(g, 'tradeVolume')
-        prices[symbol] = price
-      self.prices = prices
+      self.record_prices(mg(d, 'tradeGoods'))
  
   def buy_price(self, resource):
     if resource not in self.prices:
diff --git a/nullptr/models/waypoint.py b/nullptr/models/waypoint.py
index b336a5a..041b218 100644
--- a/nullptr/models/waypoint.py
+++ b/nullptr/models/waypoint.py
@@ -32,7 +32,7 @@ class Waypoint(Base):
   def ext(self):
     return 'way'
     
-  def traits(self):
+  def itraits(self):
     traits = []
     if self.type == 'JUMP_GATE':
       traits.append('JUMP')
@@ -54,4 +54,9 @@ class Waypoint(Base):
       if 'STRIPPED' in self.traits:
         traits.append('STRIPPED')
     return traits
-    
\ No newline at end of file
+  
+  def f(self, detail=1):
+    r = self.symbol
+    if detail > 3:
+      r += f'\n{self.x} {self.y}'
+    return r
\ No newline at end of file