Lawyers are important and well worth their cost... if the transaction goes through. You don't want to be in a situation where the deal fell through and the lawyer fees you owe are going to bankrupt you.

Assume the deal will fall through and plan accordingly, whether that's through a provision in the term sheet (like a cap on lawyer fees or a penalty for walking away from the deal), or working something out with your lawyer.

Related: deals do fall through.