I would like the 72-day figure to become a usable measure, but the insurance label is preventing that. It is unclear whether those cases involved an actual insurance delay or whether insurance was simply mentioned somewhere in the listing information. Those two interpretations should not be grouped together.
I would also narrow the neighbourhood boundaries before comparing flats between ₹19,710,000 and ₹29,560,000. A broad area may provide a larger sample, but it can combine locations with very different demand; a tighter area is more relevant, though it may leave fewer observations. Completion status, condition, and seller motivation should then be tracked separately rather than treated as part of the same outlier category.