Keeping the talk on the discussion at hand, why would anyone ever question the use of the crane AFTER it's been done. A client has the chance to call everyone in the phone book. Sometimes they do. When you go there to bid a job, you're not telling them the BEST way to get the job done...you're telling them the best way you THINK the job should be done.
If you tell them it'll be a charge of $30,000 for half a days work, and they do their homework and get a couple of much cheaper bids, and then end up hiring you ANYWAYS, then obviously it is worth it to them.
Some people don't want to do the homework. They'll pay what ever half-seemingly-reasonable price you give them. For the, the value is in getting the job done fast and smooth, rather than cheap.
Isn't that an AC/DC song? "Dirty deeds done swiftly, properly, and at a premium price"
love
nick