A buy order on Mt.Gox would take the price up to $969.99, with an average price of $954.17.  Therefore, it would cost $954,178.

However, the OP is offering 0.99*$918.7 = $909.51. Or, $909,510 for all of his coins.

Assuming you could get the money out of Mt. Gox, it would only cost you just under $45k.