This is the practical reason the figures on this list sit where they do. A drain pump, a lid lock, a door switch, a set of drum rollers, an oven igniter — these are commodity parts on a badge this widespread, stocked rather than ordered, and that removes both a second visit and the markup that comes with a specialist supply chain.
It is worth saying because it does not hold everywhere. On a low-volume European badge the same repair carries a five-day wait and a part that costs three times as much. Here it usually does not, and the numbers on this page reflect that rather than hiding it.