A brown ring on a bedroom ceiling produced two very different inspection write-ups, and the difference decided whether the buyer could negotiate at all.
Location drawing, boundary survey, ALTA title survey, home inspection: four different products with four different prices, and the reasons a quote moves.
Utilities and big landlords handle overhanging limbs and disputed lines hundreds of times a year. The habits that make that work are mostly free to copy.
Legal work is priced three ways, and the structure you are quoted says what kind of problem the attorney believes you have. That is useful information by itself.
A boundary disagreement is the clearest example of a problem where an attorney is unnecessary for nearly all of it and genuinely essential for one specific part.