really should be updated to include betfair calculations, (or at least the commission before discount) into profit calculations. without that, it really is useless if not in some cases downright dangerous.
Some users have recently requested that a option to show profits after commission be added in a future build but how is it useless or dangerous as it is?
if you're working on a very low risk, low payout dutching strategy, unless you can account for commission costs you have no idea where to put the stakes, and may even set up trades that give you a guaranteed loss.