I think that is an objective synopsis of the position, however, when an indiviudual is considering whether or not to take out a petition against an opponent in a civil action then this is often a commercial decsion. The advice given regarding costs at this stage needs to be accurate if it is way out then there should be recourse. Your answer addresses this purely in terms of accuracy of charging and information flow regarding reassessment of costs as the case unfolds. if the solicitior is plainly wrong in the fee level estimated where is the accountability for this? Afterall who is the expert?