http://news.mullerdigital.com/examples/td_share_cost_calculator/
The TD Waterhouse Share Cost Calculator now provides the share value required for a buy to become a profitable sell. The calculator returns what share price, and percentage, increase is required, when all conversions and fees are applied, for a stock to become a profitable buy to sell. This added feature is intended to help make decisions on what volume to buy and help guesstimate your investment time.