Calculating (volume x last price) can be misleading when the number of coins traded is large enough to move the market. Using the freenode/#bitcoin 'gribble' i

Calculating (volume x last price) can be misleading when the number of coins traded is large enough to move the market. Using the freenode/#bitcoin 'gribble' irc bot for some calculations, there are only 45,000 bitcoins or $5Million for sale over $100USD. donpdonp> bids 100 gribble> There are currently 45669.225 bitcoins demanded at or over 100.0 USD, worth 5307618.93329 USD in total. Selling the remaining 550,000-odd coins would wipe out the market and net only $6million more. donpdonp> market sell 600000 gribble> A market order to sell 600000 bitcoins right now would net 11853320.3682 USD and would take the last price down to 0.0100 USD, resulting in an average price of 19.7555 USD/BTC.