Notwithstanding the determination that a particular party is entitled to costs as a matter of right under this subparagraph C in an action, the trial court in its sound discretion may, upon proper objection, disallow any of the above described costs upon a finding that said costs were not reasonably incurred; were incurred for the purpose of harassment; were incurred in bad faith; or were incurred for the purpose of increasing the costs to any other party. The mere fact that a deposition is not used in the trial of an action, either as evidence read into the record or for the purposes of impeachment, shall not indicate that the taking of such deposition was not reasonable, or that a copy of a deposition was not reasonably obtained, or that the cost of the deposition should otherwise be disallowed, so long as its taking was reasonable in the preparation for trial in the action.
Id. Fam. Law. P. 901