title: back/lays values just like on betfair site
body: <p>while working on betfair api getMarketPricesCompressed and getMarketPrices return the real price and real amount of money for each odd in the market but not the virtual values showed by betfair.</p>
  
  <p>Have someone written such algorithm in php to calculate virtual values shown on betfair wesite.</p>
  
  <p>Betfair did not provided the code or algorithm but this link only <a href="http://bdp.betfair.com/index.php?opt...=237&amp;Itemid=62" rel="nofollow noreferrer">http://bdp.betfair.com/index.php?opt...=237&amp;Itemid=62</a></p>