title: Getting CS:GO Market Price history
body: <p>I'm trying to get a data from steam market from this plot:</p>
  
  <p><a href="https://i.stack.imgur.com/kyH5x.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kyH5x.png" alt="steam plot here"></a></p>
  
  <p>I'm trying to get this data using this url</p>
  
  <pre><code>http://steamcommunity.com/market/pricehistory/?appid=730&amp;market_hash_name=AK-47%20%7C%20Frontside%20Misty%20%28Field-Tested%29
  </code></pre>
  
  <p>According to economy.js file from steam market page</p>
  
  <pre><code>new Ajax.Request( 'http://steamcommunity.com/market/pricehistory/', {
          method: 'get',
          parameters: {
              appid: this.m_item.appid,
              market_hash_name: GetMarketHashName( this.m_item )
          },
          onSuccess: function( transport ) { SellItemDialog.OnPriceHistorySuccess( transport ); },
          onFailure: function( transport ) { SellItemDialog.OnPriceHistoryFailure( transport ); }
  } );
  </code></pre>
  
  <p>But when try to open <code>http://steamcommunity.com/market/pricehistory/?appid=730&amp;market_hash_name=AK-47%20%7C%20Frontside%20Misty%20%28Field-Tested%29</code> in my browser i always get empty [] result.</p>
  
  <p>On the other hand, when I'm logged in my account in browser, the result is not empty and everything is fine.
  But this plot is always available at the <a href="http://steamcommunity.com/market/listings/730/AK-47%20%7C%20Frontside%20Misty%20%28Field-Tested%29" rel="nofollow noreferrer">http://steamcommunity.com/market/listings/730/AK-47%20%7C%20Frontside%20Misty%20%28Field-Tested%29</a> page for me and it does not matter i'm in my account or not.</p>
  
  <p>How to get this data properly and without auth?</p>