The leak detector guys determined that there is a little leak in the suction pipe carrying water from the pool to the filter. I talked to a guy at a local pool store who said he would charge $100/hour to fix it, and that it would probably only take an hour or 2 but he could not promise anything. The pipe is only about 18 inches under ground. He said if it was a leaky joint it would be quick and easy, but if it was flexible hose that was collapsing it would he harder.
$100/hour seems a little high, but if it is only and hour that is no big deal.
Does this all sound fair and reasonable, or should I shop around?